An actual infinity cannot exist in general? (i.e. It can’t be instantiated in the mind-independent world.)
This is relevant because if space-time did not begin to exist, then the number of past events would be infinite.1
So? Couldn't it simply be that…
•…Past events no longer exist (presentism)
A collection formed by successive-addition cannot be infinite.1
• …any finite quantity plus another finite quantity is always a finite quantity.
This is relevant because the temporal series of events in the past is a collection formed by successive addition.
•…past events have always been infinite in number?
•…past events are not successive-additions?2
• Ellis, Kirchner, & Stoeger: “The arguments against an infinite past time are strong – it’s simply not constructible in terms of events or instants of time, besides being conceptually indefinite” [G.F.R. Ellis, U. Kirchner, and W.R. Stoeger, “Multiverse and Physical Cosmology,” Monthly Notices of the Royal Astronomical Society, Vol. 347, Is. 3, (2004): 14.]
• Graham Oppy: “...if one supposes that time has the structure of the real numbers and if one also supposes that there are continuous processes in time, then one will deny that past events form a series, and one will also deny that the collection of past events fall under a relation of successive addition. … time is modelled by the real numbers in so many of our most successful scientific theories,…” [Arguing about Gods (Cambridge, 2009), 142-143 (Oppy said this also in 2006)]