On Saturday, July 5, 2025 at 6:03:02 AM UTC-6 John Clark wrote:

On Fri, Jul 4, 2025 at 7:27 PM Alan Grayson <agrays...@gmail.com> wrote:

*> I used to think that one can measure the curvature of the our universe 
in order to determine if it is finite or infinite in spatial extent. But 
this is impossible. It could be spherically finite but so large that it 
will be measured as flat with some very tiny error.*


*With the discovery of Dark Energy in the late 1990s the link between 
geometry and the fate of the universe is not as clear-cut as it once seemed 
to be. Even if the universe has a positive curvature it could still be 
infinite and expand forever, it depends on the total energy density of the 
universe including the contribution made by Dark Energy, and nobody knows 
if Dark Energy is constant or changes with time, although very recently 
there have been hints that it may do so.*

*> Aren't we imposing weirdness into QM when it's claimed that a system in 
a superposition of states, is simultaneously in all states defining the 
superposition? AG*


*If you are unsatisfied with just being able to predict the outcome of a 
quantum experiment and want to have a mental picture of what's actually 
going on then that picture is, by necessity, going to be weird. If it's not 
weird then your mental picture would not be consistent with experimental 
results, and then what's the point of having a mental picture at all? *


What is the argument affirming that a system in a superposition of states, 
is simultaneously in all states defining that superposition? AG


*John K Clark    See what's on my new list at  Extropolis 
<https://groups.google.com/g/extropolis>*



-- 
You received this message because you are subscribed to the Google Groups 
"Everything List" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to everything-list+unsubscr...@googlegroups.com.
To view this discussion visit 
https://groups.google.com/d/msgid/everything-list/d46ec1e7-6713-4bb0-bcd0-c357837dc555n%40googlegroups.com.

Reply via email to