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Old 06-30-2009   #105 (permalink)
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Re: Fourth dimension=time?

Quote:
Originally Posted by freeztar View Post
Or a preferential reference frame.
Uh-oh

Quote:
Originally Posted by arkain101 View Post
I'm not sure what you mean in depth here. We study it all the time, using teliscopes. Sure, its not the past for an observer, its a future event, on its way to become a here/now action.
I'm just saying that two things need to touch to interact (QM aside). That being the case then the only thing you can "see" or experience is that which is physically touching you. Since it is touching you then it is in your present.

This is all semantics though. When you see a photon are you seeing the thing hit your eye or seeing the atom from which it came? If one were to say that you're seeing the photon interact with your eye then I'd argue that we can't see (or experience / sense / interact with) the past. We can only see our present. We can only experience that which touches us in our now.

Probably just semantics, and probably a bit off topic.

~modest


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