PHYSICIST
STEPHEN HAWKING: Philosophy is
dead
PHYSICIST STEVEN WEINBERG:
It's murky and
inconsequential.
PHYSICIST
RICHARD FEYNMAN: Philosophers are always with
us, struggling in the periphery to try to tell us something, but
they never really understand the subtleties and depths of the
problem.
PHYSICIST LAWRENCE KRAUSS:
Philosophy,
unlike physics, makes no progress and is rather boring, if not
totally useless.
Why do physicists bash
philosophy?
Physicists
expand the circle, philosophers help clear up the
paradoxes
By JIM HOLT
A KERFUFFLE has.broken out between philosophy and physics. It
began when philosopher David Albert gave a sharply negative review
in The New York Times to a book by physicist Lawrence Krauss that
purported to solve, by purely scientific means, the mystery of the
universe's existence.
The physicist responded to the review by calling Dr
Albert "moronic", and argued that philosophy, unlike physics, makes
no progress and is rather boring, if not totally useless. And then
the kerfuffle was joined on both sides.
This is hardly the first occasion on which physicists
have made disobliging comments about philosophy. Last year, at a
Google Zeitgeist conference in England, Dr Stephen Hawking declared
that philosophy was "dead". Another great physicist, Nobel laureate
Steven Weinberg, has written that he finds philosophy "murky and
inconsequential" and of no value to him as a working scientist.
And physicist Richard Feynman, in his famous lectures on
physics, complained that "philosophers are always with us,
struggling in the periphery to try to tell us something, but they
never really understand the subtleties and depths of the
problem".
Why do physicists have to be so churlish towards
philosophy? Philosophers, on the whole, have been much nicer about
science. "Philosophy consists in stopping when the torch of science
fails us," Voltaire wrote back in the 18th century. And in the last
few decades, philosophers have come to see their enterprise as
continuous
with that of science.
It is noteworthy that the "moronic" philosopher who
kicked up the recent shindig by dismissing the physicist's book
himself holds a PhD in theoretical physics.
Physicists say they do not need any help from
philosophers. But sometimes physicists are, whether they realise it
or not, actually engaging in philosophy themselves. And some of
them do it quite well. Dr Weinberg, for instance, has written
brilliantly on the limits of scientific explanation - which is,
after all, a philosophical issue. It is also an issue on which
contemporary philosophers have interesting things to say.
Dr Weinberg has attacked philosophical doctrines like
positivism (science should concern itself only with things that can
actually be observed). But it happens to be a mantle that Dr
Hawking proudly wraps himself in; he has declared that he is "a
positivist who believes that physical theories are just
mathematical models we construct, and that it is meaningless to ask
if they correspond to reality". Is Dr Hawking's positivism. the
same positivism that Dr Weinberg decries? That would be an issue
for philosophical discussion.
Physicist Roger Penrose is a self-avowed Platonist, since
he believes that mathematical ideas have an objective existence.
The disagreement between Dr Hawking the positivist and Sir Roger
the Platonist, - a philosophical one - has hard scientific
consequences: They take radically opposing views of what is going
on when a quantum measurement is made. Is one of them guilty of
philosophical naivete? Are they both?
Finally, consider the anti-philosophical strictures of
Feynman. "Cocktail party philosophers", he said in a lecture, think
they can discover things about the world "by brainwork" rather than
experiment. But in another lecture, he announced that the most
pregnant hypothesis in all of science is that "all things are made
of atoms". Who first came up with this hypothesis? The ancient
philosophers Leucippus and Democritus. And they did not come
up with it by doing experiments.
Today the world of physics is in many ways conceptually
unsettled. Will physicists ever find an interpretation of quantum
mechanics that makes sense? Is quantum entanglement logically
consistent with special relativity? Is string theory empirically
meaningful? How are time and entropy related? Can the constants of
physics be explained by appealing to an unobservable
"multiverse"?
Philosophers have in recent decades produced
sophisticated and illuminating work on all these questions. It
would be a pity if physicists were to ignore it.
And what about the oft-heard claim that philosophy,
unlike science, makes no progress? As philosopher Bertrand Russell
(no slouch at physics and maths observed, philosophy aims at
knowledge, and as soon as it obtains definite knowledge in a
specific area, that area ceases to be called "philosophy".
Scientific progress gives philosophers more and more to do. Said
Nietzsche: "As the circle of science grows larger, it touches
paradox at more places."
Physicists expand the circle, philosophers help clear up
the paradoxes. May both camps flourish.
NEW YORK TIMES
Jim Holt is
the author of the forthcoming book, Why Does The World Exist? An
Existential Detective Story.
Part D, The Straits Times, Saturday, June 16 2012, Pg D13
I guess it is because while physicists study things in
nature, philosophers question the nature of things which in a way
impinge upon the conclusions of the things being studied, and these
makes physicists upset?