On 2/25/2025 7:59 PM, Alan Grayson wrote:
It's not contradictory or inconsistent, it's unphysical, i.e. it can't be physically realized; which just means the theory of general relativity doesn't work there. This is not a surprise since GR is not a quantum theory and if you're concerned with a subatomic scale region you'll probably need a quantum theory.On Tuesday, February 25, 2025 at 6:40:35 PM UTC-7 Brent Meeker wrote: On 2/25/2025 3:48 PM, Alan Grayson wrote:On Tuesday, February 25, 2025 at 12:46:46 PM UTC-7 Brent Meeker wrote: I think all cosmologist, like Hartle, recognize that /the *observable* universe/ was much smaller in the past. Which is perfectly compatible with /the universe/ be spacially flat and infinite. Brent I fully anticipated that response. But why would the observable universe behave radically different from the entire principle, particularly in light of the Cosmological Principle? AGIt's not radically different. It's different in exactly the way that finite subsets of infinite sets behave. BrentBut if the observable universe contracts to zero volume, the entire universe has a singularity, which is inherently contradictory. So, the model is, to say the least, inconsistent. AG
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