darrenyeats wrote: 
> FWIW I don't identify with any religion but I do identify as a theist.
> For me this is philosophical. We go back looking for a first cause until
> eventually we must accept a "brute fact" as some call it: something that
> we accept just exists because it does. I'd like my brute fact to be
> something transcendent - flying spaghetti monster doesn't cut it, big
> bang doesn't cut it. Maths itself arguably could be called transcendent,
> but I don't like that either.
> 
> Of course, the above is hardly a bastion of logic, but it's how I feel.
> Can we talk about feelings here?! Ha-ha.

I'm more than happy to respect other people's views on this subject, so
long as they can accept mine. There are plenty of good scientists with
deep religious convictions - there isn't really a conflict when you
think about it.

I agree that the Big Bang Theory feels uncomfortable, and a prominent
group of scientists argued strongly against it, led by Sir Fred Hoyle at
Cambridge who had done some great work in devising a good theory about
the life cycle of stars. Unfortunately, the accidental discovery of
Cosmic Background Radiation convinced most of the previous supporters
for his alternative Steady State Theory to change sides. As far as I
know Sir Fred himself continued to reject the Big Bang Theory right up
until his death.

Quantum Mechanics is another area of modern physics which has caused
immense controversy because it is so counter-intuitive that is actually
shocking when you really dig into it. Einstein who was in a real sense a
"classical" physicist refused to accept that there was not some deeper
process at work, and had a protracted correspondence with Niels Bohr on
the subject which I think again continued until his death in 1955. An
ingenious experiment precisely conducted by a team led by Alain Aspect
in Paris in 1962 confirmed the quantum entanglement concept by
confirming instantaneous (i.e. faster than the speed of light, something
which Einstein intuitively held to be impossible) "action at a distance"
which can only be explained by the quantum mechanical hypothesis of the
behaviour of sub-atomic particles, at least so far.

A proposition that the universe splits in two each time an observer
intervenes in the quantum world was put forward by John Wheeler in 1948
(in one Schrodinger's cat would be alive when the box was opened, in the
other it would be dead: which one you encounter is still down to a 50:50
chance) and was so roundly pooh-poohed by his fellow physicists that he
ceased his work. This view, now termed the "multiverse", has nonetheless
been building a significant number of supporters in recent years. The
history of science is littered with false starts and personal
animosities (Newton detested Robert Hook) and radical ideas usually take
some time to be considered seriously.

The "quantum cookbook" which can be used without any particular take on
what causes the universe to behave so weirdly at the tiniest scale does
however underpin a vast amount of our modern technology.

When I was endeavouring to prepare for the Oxford Entrance Examination,
thankfully with two other students who also got entrance awards, we had
exhausted our teachers' capacity to move us on, so we indulged in "Teach
Yourself Maths" for the best part of a term after already having taken
our A and S levels. We obtained a stack of past entrance exam papers and
endeavoured to work through them.

One physics question has remained with me: it simply said "Estimate the
probability that your current breath in contains an atom of Julius
Caesar's dying breath out". Wow! That required a fairly good knowledge
of the size and average density of the atmosphere, some assumption about
dispersal - 2000 odd years seemed long enough for that to be pretty much
uniform, and the capacity of your lungs, and finally the number of atoms
in a given volume of air. Quite a big ask under exam conditions, I doubt
that many candidates took it on - there were lots of questions, you just
tackled as many as you could in the allotted time. The point however is
the answer when you plug the correct facts in - it comes out, almost
unbelievably, at around 50%! It surprised us at the time. That is how
small atoms really are, so it is obviously no surprise that there should
be no trace of "quantum weirdness" detectable at our "common sense" real
world scale, it's been eliminated by statistical regression to the mean
many times over.

It sure is a strange world/universe. And as Jim Morrison succinctly
observed "People Are Strange" too... But so be it!

Dave :)


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