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General discussion

What constitutes proof?

May 17, 2006 3:51PM PDT

Is it possible to actually prove something beyond a shadow of a doubt?

I've been thinking on this in regards to recent postings by Mark. Without selecting any particular topic, there are a lot of things that I've accepted without them being proved. I've listened to experts and studied textbooks on many things, claiming proof of this and that, and have accepted them as true. I cannot actually prove any of them.

I suppose I could repeat the work of others, but the evidence collected is subject to the senses, which can be deceived. Even when using instrumentation, no matter how well designed, I use my senses to evaluate the evidence obtained.

Let's say I have a one cubic inch block of lead. It is a single solid immobile object, my senses tell me so. Ahh, but science tells me that it is really composed of billions of tiny objects called atoms which are in turn made of smaller particles, some of them moving very fast. There is even instrumentation in the form of various types of microscopes to prove this. I have not personally seen this proof, but even if I had, can I trust it?

Is proof a matter of viewpoint?

Is reality a matter of viewpoint?

Then there's the (and I'm probably mispelling it) Heisenberg Uncertainty Principle. I'm sure Dave can correct me if I get it wrong but I believe it states that an observed object somehow changes as a result of being observed. Not sure if I believe it, but it could be.

So what is proof?

You don't of course have to limit yourself to my above example with the block of lead.

Discussion is locked

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Proof is the result of something and by
May 17, 2006 5:45PM PDT

being agreed and accepted by a group of people or consensus.. and it will change from time to time.

So, Proof is like a History...

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Depends on the kind of proof you're looking for.
May 17, 2006 7:23PM PDT

Mathematical proof is the easiest, you either get the right answer or not.

Physics proof says you make an assumption or a series of assumptions about matter then you set up experiments to see if matter or particles behave the way you think they do. If they do, you have your proof, if they don't its back to the drawing board, but the kink here is that more complicated theories as they evolve may prove things in overlapping or even discrete areas of physics, and so the new theory is considered correct because it proves 2 or more ideas in areas of physics.

Legal proof is the subject of a myriad TV shows and is supposed to involve all parties (even the defense, theoretically) searching for the truth of an occurrence so that if a person caused something to happen deliberately, or carelessly, they can be held accountable. Short of eyewitness testimony by the Mormon Tabernacle Choir, its almost always a judgement call. OJSimpson is the poster child for the difficulty of legal proof.

Now we get to where things are complicated because faith and belief come into the issue. How about biological proof, to wit, evolution. Evolution, even as coarsely stated by Darwin and Alfred Russell Wallace who came up with the same idea at nearly the same time, explains how animals change through time. It explains how a single finch species could evolve into several finch species over an extended period of time on the Galapagos Islands, and there have been endless refinements since then. There is a very good sequence of fossils indicating quite clearly that a terrestrial bear-like animal adapted to a more watery environment and eventually became permanently aquatic while still breathing air, hence all the species of whales. There are sequences like that for a number of species, but they are a minority because the fossilization process is so complicated and unlikely. And we haven't even touched on the fact that this contradicts a strict extremely literal reading of Genesis.

Science and Religion have different purposes, different goals, and different kinds of proof and occupy different realms in human understanding. Religion is a societal distillate of philosophy and ethics and history and cosmology and perhaps even biology which speaks mostly to how man should treat man. Science in the case of paleontology, the study of the fossil record, seeks to tie data points on a timeline and complexity grid together with the simplest explanation not involving supernatural involvement. This derives from a 13th Century English Churchman (Catholic) named William of Occam and goes by the name of Occam's Razor.

The fact that dinosaurs go unmentioned in the Bible does not mean they didn't exist, or that man existed almost as long as the earth existed and must have been contemporaneous with those unmentioned dinosaurs. The Judaeo-Christian Religion speaks to the societal experience of a relatively small group of Semites in the Middle East, and what rules they needed and wished to put into place to help them make sense of their lives and to give their lives meaning. The dietary laws of the Old Testament tended to keep the population healthy, the moral codes therein tended to keep the populace cohesive and respectful of one another, and even respectful of some outsiders. It tended to promote survival and a sense of ethical goodness not seen in some of the other Kingships that they outlived. And all of that comes through to us as Jews and Christians today. It is a backbone which even the least religious of us inherits and benfits enormously from. It underlies a great deal of the law that society enacts, and it certainly is the basis of our legal system, of judgement based on the best evidence, and the best advocacy, evaluated by a segment of the community.

It is unfair and simply wrong to expect religion and the Bible to literally explain everything, but it gives superb guidance on how to confront new issues, it is a philosophy of how to live. It is a book which distills perhaps 4000 years more or less of a people's experience and teaches us how to learn, how to adapt to new circumstances without losing our humanity and how to adapt without losing contact with the past. Having thought the issue over since Ian McKellan's pronouncement, and my agreement with Mark in regard to that, I have re-thought my position. Philosophy is not fiction, nor is it fact, it is a means of looking at the world, and at people and occurrences and making sense out of them of learning how to treat people as ends in themselves, not as instruments to an end (Immanuel Kant's Categorical Imperative).

I wouldn't want to live in a world without Science, but if forced to choose, I could always try to invent Science. I would never wish to live in a world without Religion the things that derive from religion. The respect for one another that the best parts of religion engenders, or the legal processes that have grown out of it.

Rob

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if it's in the pudding
May 17, 2006 8:35PM PDT

the proof of it is in the eating...


,..,

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RE: Heisenberg
May 17, 2006 9:42PM PDT

Never heard of the fellow but do google Quantum Cryptography or Photonic Cryptography. Pretty interesting.

Tom

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Doesn't that depend on the topic?
May 17, 2006 9:49PM PDT

Although I disagree with some of Rob's reply, I think he is correct in general that what constitutes 'proof' depends on the topic.

Unfortunately, it also depends on the audience. Partisanship makes a huge difference in considering 'proof'. There are people who believe, despite a substantial lack of evidence, that Bill Clinton had one of his subordinates murdered a few years back. Some of those same people wouldn't believe Reagan broke the law in the Iran/Nicaragua arms mess even if they had a videotape showing him discussing the deals. There are probably a few people who still don't believe Bill Clinton committed any crimes during his presidency.

As Paul Simon said: 'A man hears what he wants to hear and disregards the rest'

The problem, BTW, is not new. An ancient ruler said 'What is truth?' and washed his hands of the murder of an innocent man. (John 18:3Cool

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The simple answer is no. That was shown long ago by
May 18, 2006 12:13AM PDT

several philosophers. I believe Hume was one.

All things must be taken on faith. That includes science and the physical world. That's one thing that many people have a very hard time understanding because they haven't thought hard enough.

In math, the starting point is always a set of axioms or assumptions. They cannot be proven. They must be accepted on faith although many would call them self evident.

Once the axioms are accepted, they can be used to build proofs. That is how a body of knowledge is built up. If you don't accept the axioms by faith, the whole system of thought collapses.

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PS: One major problem that comes in is inconsistency.
May 18, 2006 12:18AM PDT

A person will believe one thing based on certain criteria. George Washington actually lived is an example. They will however refuse to believe other things which meet the same criteria. Frequently, this is strictly an emotional response which is not grounded in reason. Emotion trumps logic everytime, and does not need a reason to believe or disbelieve a particular thing.