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On Infinity

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Author Topic:   On Infinity
cavediver
Member (Idle past 3674 days)
Posts: 4129
From: UK
Joined: 06-16-2005

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Message 7 of 56 (390313)
03-19-2007 7:38 PM 		Reply to: Message 6 by tudwell
03-19-2007 7:22 PM

I've asked two math teachers at my school, who both said .999... doesn't equal one
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Well, they're either very poor math teachers, or they are very good but rather disingenuous to other philosophical persuasions
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cavediver
Member (Idle past 3674 days)
Posts: 4129
From: UK
Joined: 06-16-2005

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Message 41 of 56 (412592)
07-25-2007 1:56 PM 		Reply to: Message 40 by New Cat's Eye
07-25-2007 11:48 AM

Re: Question on infinity
The "fabric" of space would still exist. I think the analogy goes like the ocean. Think of the two dimensional plane of the surface of the ocean as representing four demensional space-time. The waves and ripples in the surface are what are causing energy/matter to exist, or matter is ripples in the 4 dimensional fabric of space-time.
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When all the ripples are gone, you still have the fabric.
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Impressive, most impressive... You have learned much, young padawan
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cavediver
Member (Idle past 3674 days)
Posts: 4129
From: UK
Joined: 06-16-2005

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Message 47 of 56 (412642)
07-25-2007 5:02 PM 		Reply to: Message 44 by numnuts
07-25-2007 4:34 PM

Re: Question on infinity
That's what I was thinking in the first place...matter/energy creates the ripple.
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No, in the analogy that CS is using, the ripples are matter/energy. And these ripples can group together to create much larger ripples or disturbances. In your picture of the heavy ball on the wet towel, you asked whether the ball was on, under or in the towel, so to speak. Well, in CS's analogy, the ball is made up of ripples in the towel... there is actually only the towel! In other words, there is only space-time. You are I are made of space-time itself!
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(I must admit that we're being a little loose here, and extending the concept of space-time to include all of the quantum fields, not just the metric)
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