Simple Answers to Philosophical Questions
23.01.2011 4 Comments
This philosophical question seems to keep on and on coming up, regardless of what seems to be the sheer simplicity of it. Maybe I’m missing something, but I just don’t understand where the confusion comes from at all.
Yes, I was prompted by last night’s QI: ‘If nobody hears a tree fall, does it still make a sound?’
People have always seemed to say that there’s no right answer to this one, in that if you didn’t hear it then you just don’t know if it made a sound. However, let’s allow common sense into the equation for a moment.
Now, I’m certainly not one to say that science has all the answers, and indeed in its current way of doing things it never will in my opinion, but its approach is necessary. However, in a lot of things it just is right. Sound can be defined as:
Sound is a sequence of waves of pressure which propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation). During their propagation, waves can be reflected, refracted, or attenuated by the medium. (Wikipedia, but let’s not get all heated about it.)
This makes sense, I hope. So basically sound is a wave of pressure – a vibration.
My answer is that if nobody hears the tree fall then there is still a sound, beyond all reasonable doubt! Saying otherwise is like saying that if you’re not looking at something it doesn’t exist, which is ridiculous. I am well aware of the ideas the quantum physics is giving us, and of Schrödinger’s Cat, but I think it reflects a rather narrow and self-important view of the universe, doesn’t it? Imagine, if at school a child could close his eyes and the exam would cease to exist because he wasn’t looking at it! The funny analogies are endless.
Think about it – say we go to another, unpopulated planet so there is no chance of anyone hearing it. Also not taking into account any other life. In fact, another barren planet which still has good atmosphere (somehow) but is otherwise just flat rock. Now, we land and stand a tree there with a little remote-controlled poking device. Also, we leave behind a sound recorder recording the silence. Once we’re back in orbit, we trigger the tree-poker. The tree falls over, but of course we don’t hear it. Now we land again, and take the recorder, rewind, and play back. Silence … silence … and then, OH! How surprising! I’d bet any money that there’d be the sound of … almost like … kind of … a tree falling over!
Sometimes I think these questions are made just to waste people’s time and cognitive effort. How on earth can the opposite be argued sensibly?
As for Schrödinger’s Cat, there’s another ridiculous one. If it’s in a box but it hasn’t died yet, then it’s alive. Otherwise it’s dead. That’s like saying whenever you go to your room alone and light a candle then you’ve already set fire to your hair by accident because someone’s not looking.
I can’t be bothered any more. You get the idea.
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