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Showing posts with label constant. Show all posts
Showing posts with label constant. Show all posts

Monday 14 July 2014

The Science Delusion by Rupert Sheldrake - A review

                                 

                                  The Science Delusion - Sheldrake 






                                The Day the Universe Changed - James Burke


We must find a new way of understanding human beings
A dog
Dogs: do they really know when you're coming home? Photograph: Laurie and Charles/Getty Images
The unlucky fact that our current form of mechanistic materialism rests on muddled, outdated notions of matter isn't often mentioned today. It's a mess that can be ignored for everyday scientific purposes, but for our wider thinking it is getting very destructive. We can't approach important mind-body topics such as consciousness or the origins of life while we still treat matter in 17th-century style as if it were dead, inert stuff, incapable of producing life. And we certainly can't go on pretending to believe that our own experience – the source of all our thought – is just an illusion, which it would have to be if that dead, alien stuff were indeed the only reality.
     
We need a new mind-body paradigm, a map that acknowledges the many kinds of things there are in the world and the continuity of evolution. We must somehow find different, more realistic ways of understanding human beings – and indeed other animals – as the active wholes that they are, rather than pretending to see them as meaningless consignments of chemicals.
Rupert Sheldrake, who has long called for this development, spells out this need forcibly in his new book. He shows how materialism has gradually hardened into a kind of anti-Christian faith, an ideology rather than a scientific principle, claiming authority to dictate theories and to veto inquiries on topics that don't suit it, such as unorthodox medicine, let alone religion. He shows how completely alien this static materialism is to modern physics, where matter is dynamic. And, to mark the strange dilemmas that this perverse fashion poses for us, he ends each chapter with some very intriguing "Questions for Materialists", questions such as "Have you been programmed to believe in materialism?", "If there are no purposes in nature, how can you have purposes yourself?", "How do you explain the placebo response?" and so on.
In short, he shows just how unworkable the assumptions behind today's fashionable habits have become. The "science delusion" of his title is the current popular confidence in certain fixed assumptions – the exaltation of today's science, not as the busy, constantly changing workshop that it actually is but as a final, infallible oracle preaching a crude kind of materialism.
In trying to replace it he needs, of course, to suggest alternative assumptions. But here the craft of paradigm-building has chronic difficulties. Our ancestors only finally stopped relying on the familiar astrological patterns when they had grown accustomed to machine-imagery instead – first becoming fascinated by the clatter of clockwork and later by the ceaseless buzz of computers, so that they eventually felt sure that they were getting new knowledge. Similarly, if we are told today that a mouse is a survival-machine, or that it has been programmed to act as it does, we may well feel that we have been given a substantial explanation, when all we have really got is one more optional imaginative vision – "you can try looking at it this way".
That is surely the right way to take new suggestions – not as rival theories competing with current ones but as extra angles, signposts towards wider aspects of the truth. Sheldrake's proposal that we should think of natural regularities as habits rather than as laws is not just an arbitrary fantasy. It is a new analogy, brought in to correct what he sees as a chronic exaggeration of regularity in current science. He shows how carefully research conventions are tailored to smooth out the data, obscuring wide variations by averaging many results, and, in general, how readily scientists accept results that fit in with their conception of eternal laws.
He points out too, that the analogy between natural regularities and habit is not actually new. Several distinctly non-negligible thinkers – CS Peirce, Nietzsche, William James,AN Whitehead – have already suggested it because they saw the huge difference between the kind of regularity that is found among living things and the kind that is expected of a clock or a calcium atom.
Whether or no we want to follow Sheldrake's further speculations on topics such asmorphic resonance, his insistence on the need to attend to possible wider ways of thinking is surely right. And he has been applying it lately in fields that might get him an even wider public. He has been making claims about two forms of perception that are widely reported to work but which mechanists hold to be impossible: a person's sense of being looked at by somebody behind them, and the power of animals – dogs, say – to anticipate their owners' return. Do these things really happen?
Sheldrake handles his enquiries soberly. People and animals do, it seems, quite often perform these unexpected feats, and some of them regularly perform them much better than others, which is perhaps not surprising. He simply concludes that we need to think much harder about such things.
Orthodox mechanistic believers might have been expected to say what they think is wrong with this research. In fact, not only have scientists mostly ignored it but, more interestingly still, two professed champions of scientific impartiality, Lewis Wolpert and Richard Dawkins, who did undertake to discuss it, reportedly refused to look at the evidence (see two pages in this book). This might indeed be a good example of what Sheldrake means by the "science delusion".

Thursday 23 February 2012

Einstein RIP - Your hunch about the speed of light is still true

Faster-than-light neutrinos could be down to bad wiring

What might have been the biggest physics story of the past century may instead be down to a faulty connection.

In September 2011, the Opera experiment reported it had seen particles called neutrinos evidently travelling faster than the speed of light.

The team has now found two problems that may have affected their test in opposing ways: one in its timing gear and one in an optical fibre connection.

More tests from May will determine just how they affect measured speeds.

The Opera collaboration (an acronym for Oscillation Project with Emulsion-Racking Apparatus) was initially started to study the tiny particles as they travelled through 730km of rock between a particle accelerator at the European Organisation for Nuclear Research (Cern) in Switzerland and the Gran Sasso underground laboratory in Italy.

Its goal was to quantify how often the neutrinos change from one type to another on the journey.
But during the course of the experiments the team found that the neutrinos showed up 60 billionths of a second faster than light would have done over the same distance - a result that runs counter to a century's worth of theoretical and experimental physics.

The team submitted the surprising result to the scientific community in an effort to confirm or refute it, and several other experiments around the world are currently working to replicate the result.
A repeat of the experiment by the Opera team will now address whether the issues they have found affect the ultimate neutrino speed they measure.

The two problems the team has identified would have opposing effects on the apparent speed.
On the one hand, the team said there is a problem in the "oscillator" that provides a ticking clock to the experiment in the intervals between the synchronisations of GPS equipment.

This is used to provide start and stop times for the measurement as well as precise distance information.

That problem would increase the measured time of the neutrinos' flight, in turn reducing the surprising faster-than-light effect.

But the team also said they found a problem in the optical fibre connection between the GPS signal and the experiment's main clock.

In contrast, the team said that effect would increase the neutrinos' apparent speed.

Only repeats of the experiments by Opera and other teams will put the matter to rest.

"These latest developments show how hard the OPERA team is working to understand the results," said Dave Wark, a particle physicist from the Rutherford Appleton Laboratory in the UK and committee member of Japan's principal neutrino facility T2K.

"Just as it would have been unwise to jump to the conclusion that the initial results were the result of an anomaly, it would be unwise to make any assumptions now. It is the nature of science that theories have to be tested, re-tested and then tested again".

In a statement, the Opera collaboration said: "While continuing our investigations, in order to unambiguously quantify the effect on the observed result, the collaboration is looking forward to performing a new measurement of the neutrino velocity as soon as a new bunched beam will be available in 2012."

Meanwhile, the Borexino and Icarus experiments, also at Gran Sasso, the Minos experiment based at the US Fermilab, and Japan's T2K facility are all working on their own neutrino speed measurements, with results expected in the next few months.