The Limits of Technology One of the most intriguing things about some of the concepts developed in some books concerning modern physics, and especially, although not entirely, those concerning some of the philosophical repercussions of the theory of Quantum Mechanics and its subsidiaries, is the scale of imagination being utilised. The arts are usually considered to be the area of the imagination, but in many respects in recent years, it is possible to argue that the arts have become more conservative. This may be due to many possible aspects of contemporary life - economic conditions, concern over the environment, concern over personal issues, the apparent breakdown in family cohesiveness, the pervasiveness in some areas of certain philosophies, but the fact is that much contemporary art concerns itself, or perceptions of itself, or attempts to 're-discover' itself, often in reaction to what are perceived to be the difficulties of contemporary life. This contrasts strongly with the vigour and self-confidence of much of the post-war avant-garde in Europe and America, in music such and Stockhausen, Berio and Boulez, which openly and explicitly investigated new and highly divergent ways of communicating. This does still occur, but often in a rather self-conscious, retrospective fashion. Perhaps artists of all sorts are more concerned now with the gap that has arisen between 'art' and 'the public' - not, presumably, because they are particularly interested in commercial success, but probably rather through guilt. If art is not 'applied' in such a way, what use is it? For whatever reason, whereas in the nineteenth century, if you wanted to have your mind stretched you'd be more likely to look to artists, poets and possibly the more abstract philosophers of art and perception. Science was very much the domain of doing - often dealing with appalling social and medical conditions. This does not appear to be the case any more. Ask many people what they feel about computers and they still respond with caution - even if they are fully capable and understand what they're doing, they are often still suspicious of computers and machines 'taking control' and somehow subverting humanity. This may be reminiscent of the way that some people were suspicious of electricity when it became universally available - they were worried, amongst other things that it would 'leak out' of the socket and, presumably, affect them in some malign way. Similarly, there is currently much suspicion of genetically modified food products, In spite of the fact that the majority of these commentators have no real idea of the technology involved, myself included. Maybe our recent experiences with science, technology and progress justify such suspicion - the nuclear industry, the effects of carbon fuels, (although this is hardly a contemporary industry), the 'destruction' of the environment come to mind. Whether it is science, scientists, industry, government or public demand for goods and services that is really to blame for all this is debatable, but there is a growing and vocal part of the public which is blaming all of these and more, linking them all and fanning suspicion. This may well account for the increase, especially amongst young people, of interest in some of the more 'esoteric' and 'older' traditions, notably the occult. So, amongst other things, there is considerable pessimism, even amongst scientists and technologists about the prospects of artificial intelligence, (Penrose, etc...). Whatever the rights and wrongs of these discussions, and it is part of the problem that in many ways it really doesn't matter, there are a few basic points which are very hard to argue with, whether we like them or not. Even if people believe that artificial intelligence, for instance, is not possible, this does not stop us imagining what effect it would have on ourselves and our view of ourselves where it to come about. The simple fact is that no one can be entirely sure of what will or will not be possible in the future. Or is this the case? Another astonishing thing one perceives when reading the books of eminent mathematicians and physicists is the divergence of opinion concerning some of the most basic ideas behind reality. So, while David Deutsch is positively bullish about the prospects for technology in the future, and lays considerable emphasis on the potential for technology to enable the use of artificial intelligence and active virtual reality, (which would amount to the same thing), Roger Penrose uses similarly convincing arguments on the opposite side, to emphasise some potentially fundamental difficulties involved in this process. Perhaps inevitably, and also, perhaps, with a hint of regret, Penrose's book The Emporer's New Mind has in some places an almost 'apologetic' air to it - that he cannot find it in himself or in the evidence he perceives that he can see a solution to these problems, also he does graciously accept that work in other fields - specifically quantum computing - may, although this is only extremely tentative, provide eventually some means of overcoming such difficulties. Clearly, his message, while no less elegant, is considerably more bear-like. What is a musician, or indeed any 'lay' person supposed to make of these disagreements? One of the most convincing arguments proposed by David Deutsch is exceptionally simple - the age of the universe, the age of our own sun, the age of our own species is, in cosmic terms, remarkably young in comparison to the eventual time the is generally accepted as being the most likely for the 'big crunch' (if this phenomenon is itself accepted as the most likely outcome of the universe). In a series of speculations that go way beyond those which one might normally expect in any 'science' book, he outlines the ideas of Frank Tipler, who proposes an extraordinary theory concerning the future of mankind in terms of the 'big crunch' - the omega point theory. Even more extraordinarily, when combined with Deutsch's own proposals concerning the existence of multiple 'parallel' universes (he would claim them to be much more than just this - he would take the view that they are a proven phenomenon), means that Tipler feels able to suggest that his omega point theory is inevitably the case in at least one universe of the 'multiverse'. The Need to Accept Certain Ideas, at least provisionally Time Scales Possible Futures