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Re: What is Twistor Theory? | Roger Penrose AND What came before Big Bang? Why he changed his mind. 

By: Zimbler0 in GRITZ | Recommend this post (1)
Mon, 09 Jun 25 9:53 PM | 12 view(s)
Boardmark this board | Grits Breakfast of Champeens! 		Msg. 09457 of 09670
(This msg. is a reply to 09422 by Fiz)
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Fiz > Therefore, if the universe was infinite, inertia would be infinite...and nothing could overcome inertia...and nothing could move.


I completely fail to see what the universe has to do with inertia.

In fact, I doubt that one can prove whether the universe is finite - or infinite.

But for practical engineering purposes - inertia is what it is and it is well understood.

This Wheeler fella might have spun out a pretty theory. He may have even 'proved' his theory with funky math. But it is of no use whatsoever in the real world. I'll put my faith in the engineers who have already proven they know how to move rocks, put spacecraft into orbits, and calculated how to manipulate 'heavy objects' in various orbits.

Zim.




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The above is a reply to the following message:
Re: What is Twistor Theory? | Roger Penrose AND What came before Big Bang? Why he changed his mind.
By: Fiz in GRITZ
Mon, 09 Jun 25 5:35 AM 		Msg. 09422 of 09670

"Space-time tells matter how to move; matter tells space-time how to curve." - John Archibald Wheeler #space #spacetime #curves

Inertia is the cumulative gravity in the universe acting on a point. Gravity is the result of mass bending spacetime. Space is CREATED by gravity; if no gravity then no space.

Therefore, if the universe was infinite, inertia would be infinite...and nothing could overcome inertia...and nothing could move.

ipso facto, the universe is not infinite.

Following this line of logic, if all the mass in the universe disappeared, all the space, and all the gravity, and all the inertia would disappear. At the speed of light, of course. How could you move if there was no longer any space in which to move?


I'm about 99.9% I've got all that right. I am sure about the quote at the top, and Wheeler would know.


“I am only an egg.”
― Robert A. Heinlein, Stranger in a Strange Land

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