Bahman, I'm thinking this through on the hop, so apologies if my answers are a bit messy.
Gertie wrote: ↑Yesterday, 1:11 pm Bahman wrote: ↑February 14th, 2023, 8:25 am To show this we first notice that any act including the act of creation has a before and an after. This means that time is needed for any act since there is a before and an after in any act. The act of creation however includes the creation of time as well. This means that we need time for the creation of time. This leads to an infinite regress. The infinite regress is not acceptable. Therefore, the act of creation from nothing is logically impossible.
It's a weird question to try to get your head round, for me anyway. But here's how I see it.
I understand time to be a marker of change.
Time allows change to occur.
Gertie wrote: ↑Yesterday, 1:11 pm Without change, time is meaningless.
That is not true. Time can pass without any other change.
I'm inclined to disagree. Consider it this way - the reason time didn't exist before the universe existed is because there is no change occurring when nothing exists. This makes sense if time is a marker of change.
Similarly if the universe had popped into existence in such a way that it was static and unable to ever change, time within the universe wouldn't exist. Because there is no change to mark.
The alternative is to see Time as a thing in itself, which flows regardless of anything existing or changing. But that sort of thing in itself Time would have no properties or effects, including flow in a non-existent or static universe. Or there'd at least be no discernible difference in whether it existed or not, there'd be nothing to identify or describe as Time Itself.
Which I suppose boils the question down to whether it is in the nature of stuff to change in certain ways which time marks, or time is an existing medium of sorts through which stuff changes, a medium which simultaneously comes into existence with stuff. A linguistic parallel would be to classify time as an adverb, or Time as a noun.
If we compare time to spatial dimensions, I'd say spatial dimensions also reference and mark the spatial physical properties of physical stuff, like the way an adjective works. Once stuff exists, it can be described and marked in spatial dimensions because of the properties stuff has (hence no stuff = no spatial dimensions). Likewise when stuff changes according to its own properties (matter being acted on by forces according to physics) time marks those changes. If there are no changes to mark, time is meaningless, because there is nothing for time to reference.
My question to you then, is if Time is a thing in itself, what is it? And if it has no discernible independent properties or efects of its own, except as a marker of stuff changing, in what sense does it exist?
Gertie wrote: ↑Yesterday, 1:11 pm I know change exists because my conscious experience changes. I assume the change in my conscious experience represents the sequentially changing universe my experience represents. (Time being relative doesn't mean it doesn't exist as marking change, just that how we experience and measure it is relative, I think).
And I understand logic to be a human concept which is rooted in our observation and understanding of how our universe works.
Now within our already existing universe as we experience and understand it, to say time/change/anything is created out of nothing/no time/no change at a particular temporal moment seems illogical. Because we live in a pre-existing universe and only understand time as marking the change from one state of affairs to another, which we experience and have coherent and reliably predictive ways of explaining.
However, if we're talking about the creation of our universe, we're considering a different state of affairs we call 'nothing' (aka not our universe) and we have no access to how things work 'outside' or 'before' our universe. If or how time, stuff changing, or logic can make sense to us outside what we can access from within our universe. So for example if we're considering the existence of some creative force which is responsible for the existence of our universe (including time, stuff and logic as we experience/understand it), we have no way of knowing what the conditions in which such an act of creation might or might not occur. That's assuming the notion of 'outside our universe', or outside what is epistemologically accessible to us, is itself meaningful.
One of the main premises is that any act requires times since any act deals with a change. Agree or disagree?
As explained above, I agree in the sense that time marks the change. But not convinced that time is some sort of thing in itself medium necessary for stuff to change within.
The other premise is that there was no time before the point of creation. Agree or disagree?
Agree, because if nothing exists, then there is no change for time to mark.
Gertie wrote: ↑Yesterday, 1:11 pm We can speculate, but using our 'in-universe' notions of logic based on how our universe seems to work to do so, could well be simply not understanding the implications of trying to say anything about what is outside what we can know or understand. Or if it even makes sense to try.
On the other hand if we consider our universe to be eternal/infinite having no temporal beginning, we run into apparent paradoxes, in which our logic seems incapable of reconciling our universe's infinite past with reaching this point now, and now, and now, like Xeno's arrow. Or how our spatially infinite universe which encompasses everything can expand.
Eternal universe is illogical since it takes infinite amout of time passage to reach from infinite past to now.
Agree, according to our human in-universe knowledge about how the universe we're in works. But we don't have access to/knowledge of the state of affairs, if any, not included in what we can recognise as our universe.
Inconclusive conclusion -
Our logic based on what we flawed and limited humans observe about how our universe works has problems with both creation ex-nihilo and an infinite past. Our human logic suggests it has to be one or the other, but can't unproblematically get us to either.
Answer - dunno.