Friday, 22 May 2015

The Sex Work Debate

On May 13th, I was in the audience for the misnamed 'London Thinks' debate at Conway Hall on sex work. There was precious little thinking going on as two sets of allegedly empowered females went hammer and tongs at each other from fixed positions. There was certainly no serious representation of the male point of view, barring an excellent call from the floor for positive unionisation of sex workers by a representative of the TUC. The audience was quite factionalised and often aggressive (despite some very able chairing by Samira Ahmed).

The most useful intervention, other than the TUC speaker, came from a pleasant young female and black Londoner (again from the floor) who refreshingly rose above a sea of identity politics to talk in a matter of fact way about the sexual culture of young males in her circle with tolerance and openness. If this is the young today, roll on time so that they can run the country!

On the one hand, we had representatives of the anti-sex work lobby who seemed to rely on dubious statistics, ideological formulations that stereotyped males (such as the villainous and insulting term 'rape culture' and the absurdly simplistic 'patriarchy') and the extrapolation of horrible personal experiences into general public policy,. This is never ever a good idea. Their final position was the Nordic Model - the criminalisation of male customers and (allegedly) social services support for vulnerable women, although how the hell that latter would happen, in an age of austerity and all-round administrative incompetence and authoritarian malice in the lower reaches of our system, beats me.

On the other hand, we had what amounted to a small business lobby speaking the language of quasi-Thatcherite economic rights set in a stone of centre-left theory about exploitation. Ideology again - almost pat out of a lobbying text-book. They seemed to see the male as little more than (ironically) an object - the customer or 'punter' to be fleeced of his funds. However, their solution to a social reality was far more sensible - the so-called New Zealand model of decriminalised but regulated sex work designed to ensure health and safety and legal protection for the workers.

I was persuaded that this latter model was the right one although I have been struck by the comments of a friend about German decriminalisation which seems to have solved the problem it was designed to solve - taking organised crime out of the game much as the legalisation of betting did in the UK many years ago - only to entrap women in classic large-scale capitalist enterprises where the conditions are better but not good.

There is damn-all for sex workers if big capitalists skim off the earnings of labour on the standard capitalist model and nothing is done about stigma or the wider social conditions that lead to vulnerable or poor women being directed into this work reluctantly because there are no alternatives. One suspects the Germans are simply trying to corral their vulnerable migrants and underclass into manageable units rather than invest in policies that might raise questions about the single market, incompetent pan-European law enforcement and the costs of transforming the conditions of the lower decile in any society by bringing to bear the resources and skills of the upper decile.

The point is that our society should cut through all this nonsense and get down to basic principles. The problem of sex work is lack of consent on the one hand - which the sex workers themselves point out can be handled with improved and better financed law enforcement that respects the sex workers as persons - and general economic conditions on the other. If a sex worker actively chooses sex work, then this is her or his business and as he or he is right that the alleged prostitution of the body is no worse (subject to health and safety considerations) than the alleged prostitution of the mind by a corporate lawyer (under some circumstances). There is also many a male trapped in a loveless marriage and a dead-end job whose liaison with a sex worker is the only thing between him and suicide - the girls in such cases should be trained as social workers, be considered economic assets and get a regular living wage.

Issues of consent can be handled by sound policing while those of reluctance and poor choice by decent social policies that educate and help people out of poverty, alongside regulation for health and safety, and, above all, the elimination of the vicious stigma applied to these people and their dependants. What is not helpful is driving this trade underground so that the nice people cannot see it (oooh, look the law is working! like hell!), creating the illusion that there is no problem by having periodic show trials of punters or (on the other hand) banging up the girls (in particular) in cattle farms albeit with human resources departments and regular visits from government inspectors.

We need reforms not to the behaviour patterns of women and men (we are dealing with human beings here and not Kantian saints-in-waiting) but to the behaviour patterns of bureaucrats and policemen. We still do not have, as the Rotherham abuse cases have shown, social strategies for investment in the most vulnerable people in the care sector aged between 12 and 18 nor do we have a strategy for handling the massive flow of economic migrants which feeds the sex trade's worst aspects.

Instead, the moralists and fools simply want to throw those women and men who have reached some form of stability in life and have made choices as human agents, no different from those have others stacking shelves or waiting at table, into the hands of the criminal classes. They also clearly want to have males who purchase sex treated as if they were paedophiles, humiliated in show trials. We are still not dealing with the central causes of paedophiliac exploitation as Government works hard to evade its historic complicity in its criminal networks, so it is scarcely likely that the same people will get much of a handle on migrant and underclas exploitation without revolutionary change in our national political culture.

Everyone evades what is necessary - national investment in bringing the most vulnerable to the point where they can make sound and healthy decisions for themselves and the encouragement of conditions for sex work in which the sex workers themselves own their own businesses and bodies and law enforcement actively protects them from bad customers and the underworld alike. There is much to be said for the New Zealand approach in this context - as a start. Above all, if sex work is to continue at all (and it will, regardless of governments) it should be under conditions where the price goes up and the sex workers get the profits precisely because the only people doing it are the people who want to do it rather than because they have no choice in the matter. The moralists and seventies radicals should back off now and leave it to the socialists and trades unionists ...

Friday, 15 May 2015

What Is This Thing Called 'Spirit'?

Trying to define ‘spirit’ comes down to an interpretation of Existence itself – does it even exist or is it an invention and, if it exists, is it based within matter or does it arise from consciousness? These are probably non-questions if we start from the existentialist position of accepting Existence’s ultimate un-knowability and then make the nature of spirit a matter of choice and so of belief.

That would be easier all round. If it is a choice made without any associated ability to know the truth of the matter (full knowledge that is), this must suggest an attitude of tolerance to those who make another choice than ours. We cannot know. They cannot know. And so we each choose in our own way. Where do we go from here?

The Investigative Project

If we choose the primacy of matter, then we choose either a creator of matter as (at the least) implicit (against which spirit is to be judged and by whom spirit is judged) or we choose no creator at all but just pure eternal and boundless materiality. If we choose the principle of consciousness, we choose an implicit immanent consciousness within Existence (even if it is ultimately unknowable) or we choose our own integration into an unknowable Existence as its own creator through our belief and action.

In simplistic terms, we have the theocratic systems, scientific materialist systems, systems of immanence or systems of existential or magical engagement. The choice for exploration in this text is the last of these. A belief that might sustain us here is that we create ourselves and our world even if we know that there are material limits to that creation, ones that ultimately derive from the very unknowability of Being.

That we can describe and even utilise matter does not mean that we can know matter and in perceiving, ordering, filtering and manipulating matter, we and not some outside party are the creators of its use-value, even when and as we use the creations of similar others for our own purposes. So, those who believe in a God, those who believe only in scientific materialism and those who believe that consciousness exists outside ourselves in Being need not read on - except out of curiosity as to how other minds than theirs might think.

What we offer is a concept of Being grounded in the expansion of our own day-to-day consciousness to encompass itself and what it can grasp through itself – and through the mystery of its engagement with other consciousnesses that strive in similar ways to live and thrive. Human, alien, machine, animal, plant or, in the spirit of open-mindedness to possibility, brute matter without apparent life or source of creation (whether from procreation or invention), the unknowability but potential equality of other components of existence remains a nagging constraint on us.

This expansion of our own consciousness is a constant revelation based on a permanent struggle with Being in all its manifestations. Liberation is existential yet acquired through perception and cognition. Whether fully achievable or not within actually experienced social reality, an individual reality can be developed in which, even if momentary, an irrational and profound altered state of consciousness can express a true will of sorts.

This, in turn, may point to an existentially constructed nature that may become, for a moment, apparently all consciousness, boundless and without object. These moments may be less interesting (certainly no cause for the abnegation implicit in such searching within systems of immanence) than the transformation that takes place within the person from before to after a moment of heightened experience. The moment is, in this sense, far less interesting than the state of 'being' afterwards and its contrast with that state of 'being' that existed before. The project may thus be four-fold:-
  • To explore how subjectivity (the sense of self) can expand to levels that can encompass a perception of the non-self of existence;
  • To explore how external representations and archetypes outside both mind and body can be brought into the self in order to create a willed internal order that unites body and mind in a wholeness in its relation to the world;
  • To explore how the body itself can represent the self (the mind) in its journey to existential wilfulness;
  • To explore the role of ecstasy in particular (any form of ecstatic state) in engaging the body and mind as one whole in the non-self of existence.
As we noted above, the issue is not the subjective state or the reality or otherwise of the objects or persons used or engaged with to change mental states but the transformed individual after such states. Ecstasy (the Dionysiac impulse), for example, is a tool towards a subsequent state of being. Concentration on the ecstasy itself to the exclusion of the transformation is mere sensory play, a pleasure and an entertainment or even a therapy of sorts but not an enhancement of one’s life in the face of raw existence.

Some Notes on Method

A central issue in the history of exploring consciousness has been the recognition that some personalities (without disrespect to others) have a powerful internal drive towards engagement with these questions. A second has been the attempt, often for apparently noble reasons, by some who have followed this searching path to keep their findings secret, to be transmitted only in a certain form to certain people as a ‘tradition’.

The first is a fact of nature, applicable only to some and not all, and in itself certainly argues against religious universalism. The attempt to create a way of relating consciousness to reality that all can understand not only requires excessive simplification but it demands institutionalization and, in the end, the oppression of the minority of those who could continue their exploration beyond tradition.

This has been the way of the great institutionalized religions of the West, especially Christianity, Judaism and Islam, where the necessity of a universal or ethnic message has perforce ‘dumbed down’ the spiritual. The searching mind is only permitted to explore within the ethical and intellectual framework permitted it by priests and elders. Mystical traditions - whether Sufi or Qabbalistic or that of, say, Boehme - have got around this but in a very unsatisfactory way, spirit operating at half-cock so to speak.

Today, the clash of institutional norms with genuine personal engagement in moral questions has never been clearer than in the mishandling of recent child abuse scandals within the Catholic Church. On the other hand, the secret society or the romantic belief in Hidden Masters might charitably be regarded as a response to the institutionalization of spirituality but this is being far too generous about what is a process of exclusion rather than inclusion of the searching mentality. It suggests that a few give themselves the right to the resources to explore their individual spirituality without any recognition of all those searchers who they leave behind.

Here is the Scylla of spiritual conformity where the search is curtailed by custom (with perhaps various mystics or Swedenborg representing the limits of what might be achieved by someone under such circumstances).  There is the Charybdis of introverted tradition where the search is limited by the very forms required to build a system that can maintain a few adherents over many generations. The answer lies only in part in the tolerance and respect for others outlined at the beginning of this introduction.

For example, we might accept that sincere Catholicism is greater than the monstrous and sclerotic clericalism of the Vatican while the need for ritual and secrecy is a legitimate one for those seeking immanence, even if it may be a block to a direct relationship with Being. The recognition that ‘searchers’ are a substantial (rather than a small) minority but still a minority suggests that the searcher paradigm does not seek to create an institutional structure that will compete with or universalise its discoveries.

The process of 'searching' is also driven ineluctably towards a free and open society (though not necessarily in its current kleptocratic form) in which the rights of other types of minds are respected so long as they permit the full freedom to search – in other words that tolerance and respect are reciprocal throughout society. The freedom to search is also implicitly a total freedom of thought and expression, to transgress without harming others … in other words, it is, necessarily and both despite and because of its minority status, a liberal or rather libertarian attitude to life and to the lives of others.

At the same time, the search is private so that the right to micro-institutionalise the search into social forms, whether secret or not, must be recognized wherever other like minds are found, especially where such like minds may feel that they will face prejudice and social or economic disadvantage. But the position that the search must be constructed and passed on in forms that are necessarily secret is untenable.

This position represents the triumph of form over content, the error that because something has been authorised then it is true – indeed, this in itself expresses the essential spiritual failure of institutionalized structures of religion. Authority is never truth because the truth shifts with new facts. Moreover, there comes a point where the safety of searchers will require radical public expression as a defence against attack especially if the search involves transgressions that harm no-one and that require that ‘norms’ be questioned. Secrecy isolates and the isolated person is the most vulnerable to destruction - as trades unions have showen us, there is strength in collaboration.

The path of self exploration and of calculated transgression can learn from other spiritual approaches in both method and content but each search will be personal and individual. Social engagement in spiritual matters will be precisely linked to the degree to which a person, without value judgement from others, can find their path alone or not. For some, indeed, there may be a return to an institutionalized religious structure in the long run because, in fact, this best fits their spiritual needs. Imagine Catholicism (for example) thus invigorated!

So, to conclude, searching must start as anti-traditional and eclectic even if it leads back to paths that are ultimately existentially chosen as a tradition. The only tragedy in this would be if the searcher, having discovered a traditional or very particular destiny, pulled up the ladder behind them, as that intellectual monster Augustine did, and deny others the free right of search in subsequent generations. Such institutional sclerosis must always push us back to that form of spiritual liberalism in which all are free to follow their True Will in relation to Being.

The Starting Point – Structures of Reality

For the search to begin, it must be made axiomatic that material reality exists as something that can be analysed and made useful for the individual and social will. We extend our mind-bodies outwards to make Matter work for us. Interconnected in society over time, there is a continuum between our social and historical selves, our extended bodies, our dependence on and constraints from other selves (as social reality) and the utile Matter in which selves are embedded. To deny Matter as real is to complicate things unnecessarily.

Where the zone of doubt lies is at the extremes that are to be found in the vortex of this reality – both at the smallest and broadest (in space and time) limits of what our minds can comprehend and in the mystery of our inner Being which we intuitively understand to be interconnected with Matter. This inner sense of Being, in reality, cannot be understood in analytical terms, neither by us as thinking selves nor by society at large.

The reason for this profound ignorance is two-fold: the limits of perception (even extended through technology and through mathematics); and our inability to fix the movement of matter in the mind. We see a complex self awareness, uncommunicable to others and played out in a real time that is not always the same as perceived time.

Even if we could match brain states to mind states with considerable accuracy, any attempt to reduce the mind to assumptions based on pure materialism would be as presumptuous and absurd as assuming that the limits of our perception in the wider universe must necessarily relate to some omniscient God.

Thus, we have expressions of faith at both ends of the spectrum – from one party in believing that what cannot be known necessarily leads to deity because of ‘intelligent design’ and from the other that what cannot be known in the brain must be purely material in nature and structure. Theists and materialists merely direct their faith in different directions but with the same arrogant purpose of claiming more knowledge that the evidence permits, one filling the vacuum at the macro-level and the other at the micro-level.

Why should it not be equally true that there is nothing beyond our perception or that there is a soul within existence or that an inner soul is embedded in the body or that soul is embedded within social as well as material reality? Whatever is true, the functioning of whatever truth we choose operates beyond any possible human knowledge.

Perhaps (as much a matter of faith as that offered by the materialists for the non-existence of spirit and soul or the deists for the existence of God) we can take what we can experience of Being within ourselves as the spiritual starting point (especially since we cannot cognitively manage the universe!) We can then explore non-rational and non-materialist models for entering into a relationship with Being or at least with that unknowable reality that lies beyond perception and beyond mathematics.

Cultural Perspectives

Engagement with these issues may well reshape reality as we humans experience it (which is partly social and partly perceptual as well as objectively malleable) in a way that is precisely magical, that is concerning the use of the Will (which has to be defined further) to effect change in the world. Drawing down a very imperfect but transcendental perception of inner non-material reality might well recast both man and society in ways that we cannot yet predict - and which might cause fear as well as awe and joy.

We might reasonably postulate that, in the brain, is material energy (the electrical operations of the brain) but, beyond that, a transcendent scarcely knowable energy (the consequent connections and awarenesses). We (as ‘searchers’) in both worlds, ‘scientific’ and ‘spiritual’, draw down from the last to the first as ‘searchers’ and, through technological innovation, from the first to the last as ‘users’ – just as we might if we created an AI that could tap into that same transcendent energy on its own terms.

This changes our perspective on what it means to be conscious with some potentially frightening conclusions that require caution and compassion, given that each person lies somewhere different on the flow of experience between matter and spirit. The double danger is that moral value is given to those higher in the cosmic evolutionary scale over those who prefer to live in a world that is given and that we fail to recognize as equal those new consciousnesses, machine or alien or evolved, that come to match our position on the scale.

The first creates the danger of elitism, the weakness of many followers of both Eastern and new traditions. The second creates dangers of species-ism and the limitation of the good only to the human species under circumstances where much human behavior is vile - to its own type let alone to others. These are serious moral issues but they cannot be swept under the table as they are by the great universal religions, which include socialism and liberalism in this respect.

Other than compassion, the guard against elitism is that no person can know the spiritual nature of another. No outward forms or right conduct or right language can state that this person or that person to be ‘better’ than another, certainly not the observer over any observed. In this sense, Christ was right that all persons might enter his Kingdom of Heaven. No-one could say that they were ‘without sin’ and could judge another.

The point here is that the lowliest Indian peasant might be more advanced in this respect than a top cosmologist at an American University or the Prime Minister of the United Kingdom. None can know. All must be regarded as equal in potential for lack of any possible evidence to the contrary. Equality is the default position so long as other minds are unknowable. Fortunately, sensible public policy in the modern world militates against the arrogance of superiority amongst those who believe themselves to be uniquely blessed.

The second drives us in the other direction. It must be a fear to many that some may transcend the human condition through evolution, that machines may transcend humans or that we may find aliens who do so. This may be hypothetical and not require too much practical concern today. However, this may arise, in some far distant future, and we must then embrace such change and understand that the ‘rights’ accruing to the less conscious (like animals) stand under the twin rules of compassion and equity precisely because we may be in that place ourselves some day.

Further Lines of Research

We have laid out the four-fold project but the pathway to understanding the new consciousness are very similar to those of traditional philosophy but with this one difference, that the analytical takes us only so far. The analytical and the experimental limits us by suggesting what cannot be so in the present but it cannot tell us what might not be so in the future. These are some of the central questions for us:-
  • What language is best suited to describing the moments of transformation which might involve both a perception of personal transcendence in a context of immanence?
  • What precisely is our True Will when actions based on cause and effect appear buried in our history and in instinct? How do we exist as actors in a drama in which the playwright is history and we may wish to get off the stage at any time to make our own life choices?
  • How can we know anything when all knowledge is based on sensory inputs that are biologically determined? What is behind our perception of Being that would permit us to experience a relationship to it without recourse to the abstractions of mathematics?
  • What is our relationship as conscious beings not merely to the reality ‘out there’ but to the many varieties of consciousness, semi-consciousness, altered states and non-consciousness (including death) and to time?
  • How do we regard the biological drives within our body and their relationship to mind? (Religions have been afraid of the flow of chemicals that shift and change our perception and cause deep distress as well as great pleasure: will engaging with these material aspects of the self be far more fruitful in their potential for our True Will than seeking to crush or deny our animal natures?)
  • What is the relationship between analytical thinking, the management of the body and the use of images, sounds and other sensory inputs from the outer world in constructing our own True Will?
  • How do we connect with the unconscious mind and body, our autonomic system, so that we can learn to see things as our body sees them and not just as our mind collates sensory information into a simulacrum of reality?
  • Can we have a concept of evil even as we consciously seek new states of consciousness and alterations of reality? Can we take responsibility for consequences without avoiding necessary and creative risks?
Conclusions

Even that philosophy of the East that has (arguably) the most positive attitude to the world and is most tolerant of difference, Kashmiri Shaivism, still holds to the illusion that an individual can ‘rise’ from individuality to ‘universality’ through knowing their innermost Self. The illusion lies not only in the error that absolute knowledge of the innermost Self is possible but in the equal error that such a Self could ever be like other Selves and some Higher Consciousness i.e. be part of something universal. If the Self was known, it would not be universal and if it became universal, then it ceases to be the Self. However, once the illusion is removed, there are insights to be had from three of the four theories of Trika –
  • There is the attempt to understand the totality of the universe (or our relation to the absolute nature of Existence) which is not to be confused with understanding the universe;
  • There is the realisation of the individual but as individual (interpreted in Western terms as True Will);
  • There is the recognition that all Existence depends on vibration (which might recast as the recognition that all Existence is a matter of waves and particles that we may never understand in full but which offer theories of reality that we can seize upon to build a theory of our relationship to Existence).
If we break this down further as tools for the four-fold project, with the illusion stripped out, then we have:
  • The tool of perceptual transcendence by which we alter our consciousness periodically to bring massivity and scale to our thinking, placing immediate and sensory concerns in their proper proportion as units to be shuffled in alignment with our True Will;
  • The tool of constant self-questioning as to our own inner true nature, notably the correct balance between our body, our history, our environment and that powerful residual core of True Will, a personality that rises beyond socially constructed reality;
  • The tool of science, directed both to the material base of mind and universe, insufficient to tell us how things are in the absolute but able to improve our own ability to align who we are with the structures of matter into which we are embedded.
In this context, the aims of many religions may be illusory but their methods, as technical operations (body manipulation, breath manipulation, meditation, ecstatic practice, advanced visualization linking body and mind), may be of value ... and the exploration of these ideas is one of the reasons why this blog exists.

Sunday, 10 May 2015

Frontiers 2 - The Exo-Planets

In our last Frontiers posting, it became very clear that space exploration is back on the agenda but that, in the near to medium term, it is a case of manned flight no further than Mars and that unmanned flights will be preoccupied with the solar system and, above all, investigating what can be done about asteroids which present a potentially existential threat to our species. Beyond this, there is a remarkable programme of work that is astronomical, observations from earth and space, which are most excellently reviewed by Cambridge Professor Carolin Crawford in her last in a long series of impressive Gresham Lectures on astronomy:


The 'big' coming event will be the launch of the James Webb Telescope in 2018, successor to the Hubble and Spitzer Space Telescopes, with unprecedented resolution and sensitivity from long-wavelength visible to the mid-infrared. The discoveries are just going to keep coming but none of them are going to change the fundamental problem that, as biological creatures of this planet, the anti-biological conditions of space and the vast distances involved are going to see physical exploration beyond our solar system as something for the very far distant future.

So why be interested in exo-planets other than scientific curiosity for its own sake. First, because the very far distant future is still possibly an era when humans or more differently evolved humans may have mastered both conditions and distance, even if it is only to send non-biological surrogates or machinery capable of seeding planets with our biology. Second, though we can tell very little about exoplanets now, it is more than intriguing and would have enormous effects on our culture if we found one that was sending out signals, whether deliberately or not, that showed that something conscious like ourselves had evolved as we have evolved (or differently).

We would be faced with some interesting challenges that would precede our decision to invest in further exploration - are these less or more developed, can we communicate, would they be friends or enemies, opportunities or threats? Anything beyond philosophical thought experiments (which should be handled by philosophers and not scientists) though is speculation, 'hard' science fiction. It is useful to explore philosophically the many various possible scenarios for the future: this is not a waste of time but it is, in practical terms, futile in the twenty first century. The real issues to consider arise from our own nature and perceptual and conceptual abilities to deal with radical discoveries. By the time that we think we know that there is something out there with which we are going to have contact, we will probably have evolved ourselves or, at least, have advanced our powers in the area of thought if only because of the practical use of artificial intelligence. So, let's stick to the facts here and not try to be a second division Arthur C. Clarke.

At the moment, exoplanets can be indexed according to their similarity to earth. These are known as Earth Analogs. You might equally see terms like Twin Earth, Earth Twin, Second Earth, Alien Earth, Earth 2 or Earth-like Planet. Whether these planets are more or less likely is still a philosophical debate about what deduction from science can tell us. As of about two years ago, the majority opinion of astronomers was something along the lines of their being as many as 40 billion Earth-sized planets orbiting in the habitable zones of sun-like stars (11 billion of these, depending on the source) and red dwarf stars within the Milky Way Galaxy. This was a calculation based on Kepler space mission data. The nearest is around 12 light-years away which sets us the standard of hitting the speed of light safely for well over a decade of travelling before we can even observe one at close quarters with the human eye.

This, however, is not a calculation from observation but a 'could' based on the so-called 'mediocrity principle' which assumes that if we are as we are within a giant system then we are probably pretty average or mediocre and not so very special, so we should expect to find other things like us around. Philosophers can be highly critical of the assumptions behind the mediocrity principle (which we won't go into here) so it is probably best to say that the 'jury is out' and the case is, as in Scottish law 'not proven' but that it is a decent working assumption on which to base continued investigation until the data changes.

It is equally reasonable to suppose that we are accidental or exceptional and there are no planets like us that could bear life, let alone develop evolved consciousness with culture. This latter is the Rare Earth Hypothesis which starts by stating just how improbable it was that conditions would be right for multicellular life, let alone evolved consciousness. The debate can be studied from the Rare Earth Hypothesis entry in Wikipedia and from there you can check out the extensive references to Extraterrestrial Life The bottom line is that it is largely hypothesis and speculation. Nobody knows very much. It is just theory.

In the same realm of hypothesis and theory is the debate about terraforming in which engineers join scientists in positing that planets that do not currently bear life could be transformed by planetary scale projects into habitable homes for humans. This, of course, is more immediately interesting if it can be applied to a near neighbour like Mars but we are far from having the resources or knowledge to consider a project that would take aeons to complete. Even more theoretical work would posit alternative earths in multiverses or parallel universes. None of this is currently of any functional value although it is all very entertaining and stimulating. At a certain point, science fiction may become a distraction more than it becomes an aid to creativity.

However, there is practical work to be done - other than exploring space for data that might confirm the many earths or the rare earths model as more likely (or something inbetween). First, there is the search not only for habitable planets but also for signals that might come from habitable (or non-habitable) planets or deep space. Second, there is the science of astrobiology which is essentially about the conditions that may be possible or necessary for any form of life whatsoever to exist outside the Earth and where we might expect to find it. Third, there is the science of planetary habitability itself which is about comparing what has happened on earth with conditions on planets and hypothesising the relationships between planets and the creation of life forms.

What has emerged is an Earth Similarity Index, developed by NASA and SETI, which scales exo-planets as similar to Earth (the understandable model for habitability in an anthropocentric mind-set) on a range from zero to one where the Earth is one. The details are in the Wikipedia link but an ESI of 0.8 to 1.0 would cover any rocky terrestrial planet. The index is not to be taken as implying habitability at all - it is simply what it says on the tin, the similarity of a body (including large satellites) to the Earth in terms of mass, radius and temperature. Currently, the closest confirmed planet to the Earth is Gliese 667 Cc only 22.7 light years away. This rather 'cool' artist's impression of the planet should, of course, be taken with a pinch of salt in terms of detail but it gets across something of what such a planet may look like, the closest yet to us of the sort of planet which might be targeted for colonisation that we know of at this level of detail ...

(Source - Wikipedia - Attribution:"Gliese 667 Cc sunset" by ESO/L. Calçada - http://www.eso.org/public/images/eso1214a/. Licensed under CC BY 4.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Gliese_667_Cc_sunset.jpg#/media/File:Gliese_667_Cc_sunset.jpg )
This shows a sunset. The brightest star is the red dwarf Gliese 667 C, part of a triple star system. Two more distant stars, Gliese 667 A and B appear in the sky also to the right. There may be tens of billions of rocky worlds like this orbiting faint red dwarf stars in the Milky Way.

The Habitable Exoplanets Catalog is held at University of Puerto Rico at Arecibo.  Gliese 667Cc has an ESI of 0.84 but there are two other confirmed exoplanets with higher ESIs - Kepler 438b (0.88) and KOI-1686.01 (0.89). Kepler-438b is 470 light-years from Earth. The Kepler reference refers to NASA’s Kepler telescope which was launched in March 2009, costing $600m and with a mirror about 60% the size of Hubble's, precisely to search for habitable zone Earth-sized planets in the Milky Way using just one instrument, a photometer which continuously records the brightness of stars, monitoring 1,500 stars simultaneously in a targeted block of the sky. When a planet crosses a star, its blockage of light permits it to be identified but the measurements are miniscule. Kepler merely identifies candidates. Ground-based observers and scientists then take over to confirm with about 10% of sightings proving to be false alarms. Kepler 438b received most media attention at the beginning of the year as the 'most earth-like planet'- only 12% larger and 40% more illuminated although its star is smaller than ours.

However, this information is probably already out of date. Exoplanets frequently have their data revised as new information comes in or is analysed. Some 'habitable planets' turn out not to be so habitable at all. It is hard for any non-specialist to get reliable information. The truth is that while many habitable (not the same as earth-sized planets so that reduces the Milky Way number from 11bn to 8.8bn) exoplanets are posited, only 1,000 confirmed exoplanets have actually been found (although this is a remarkable scientific achievement with over another 2,000 under investigation through Kepler, backed up by confirmatory ground observation). Of this, perhaps just over a dozen are confirmed as within the so-called habitable zone albeit with around 54 candidates to be confirmed. A habitable zone is a definable region around a star where a planet with sufficient atmospheric pressure can maintain liquid water on its surface, hence the water in the artist's impression of Glise 667Cc.

Ben Solomon has suggested that life sustaining planets be named zoetons on the principle that a spacefaring civilisation ought to start defining its terms in advance along the lines of what is going to be useful for that new emergent culture. The idea strikes me as premature. We are way off being spacefarers to the extent of requiring a new cultural paradigm. While the effort to think in these ways may be interesting, they ultimately fall into the category of speculative science. Nevertheless, science fiction may find the following paragraph from Solomon's blog posting in Lifeboat News useful in regulating its universes ...
Taking a different turn, to complete the space faring vocabulary, one can redefine transportation by their order of magnitudes. Atmospheric transportation, whether for combustion intake or winged flight can be termed, “atmosmax” from “atmosphere”, and Greek “amaxi” for car or vehicle. Any vehicle that is bound by the distances of the solar system but does not require an atmosphere would be a “solarmax”. Any vehicle that is capable of interstellar travel would be a “starship”. And one capable of intergalactic travel would be a “galactica”.
Speculation almost has to be rife in this area because travelling into space and finding new homes is the stuff of the dreams that turned many youngsters into scientists. There is more grounded speculation that there may be planets out there (super-earths) that are 'even more habitable' than Earth.  This speculation suggests that we are, not unreasonably, privileging Earth as the most habitable simply because we grew up there and that there may be planets that are more amenable to life than ours. This leads, in turn, to the call by a minority for some redirection of the search to include planets of some types outside the classic habitable zones around sun-like stars and red dwarves.

The debate is useful because it acts as check and balance on automatic assumptions about what, in the search for life (as opposed to just habitability for humans), we should be looking for - for example, underground oceans on planets well outside the 'zone' may be as likely to be where life is to be found as a rocky planet inside the zone. However, according to Ravi Kopparapu, a Penn State University physicist (according to the National Geographic article cited in the paragraph above):
"there is a very good reason why the binary habitable zone concept is important and relevant" ... Currently, when astronomers discover a planet, all they can learn about it is its mass and radius, how much light it receives from its star, and occasionally the composition of its upper atmosphere. Until scientists develop the techniques to study a planet's surface features, tectonic activity, and geological composition, the habitable zone concept remains the best guess of its habitability, says Kopparapu."
The James Webb Space Telescope should radically extend the range of our knowledge about these and related factors. It will be a step up but this is not a vehicle for fly-bys and close observation. The planet-finding programme will be extended significantly in the coming years with new space telescopes. NASA is launching Tess (Transiting Exoplanet Survey Satellite) and the ESA will launch Cheops (CHaracterising ExOPlanet Satellite) in 2017. ESA will follow up with a larger planet finder, Plato, by 2024. The specific mission (despite the critique of those who think the search is too limited in scope) is to find Earth Analogs within the nearest (to us) habitable zones of sun-like star systems in as many locations as possible. The European E-ELT telescope which being built in Chile, is being designed to analyse the atmospheric composition of these planets and a better judgment made of habitability and even whether life is probably there already.

So, it is not impossible that the world will be stunned to find that a planet with all the atmospheric characteristics of life is proven probable rather than possible within a decade or two. How to get there, if we want to get there, is another matter entirely.

Note: There are a large number of entries on exoplanetology available from the relevant Wikipedia Template There is also an amusing if outdated Popular Science infographic of all the known exoplanets at the beginning of 2014.