Byblos explained it in the post I linked. I will quote him here:Kenny wrote: ↑Sat Dec 29, 2018 12:33 amI actually looked over the entire thread. Yeah he tried to explain why there can’t be more than one uncaused cause, but IMO he didn’t do a very good job of it. He made a bunch of claims that weren’t backed up, then everybody and their mother jumped into the conversation and everything went off topic and we spent most of the thread talking and arguing about something else. Eventually everybody gave up and quit responding and the original claim was never answered to my satisfaction.RickD wrote: ↑Fri Dec 28, 2018 7:51 pmKenny,
As Byblos explained to you before, there cannot be more than one uncaused cause.
Here's the thread:
The above explanation is explained logically, and sufficiently. If you disagree with something specific in what he said, you can ask, and maybe someone will be able to explain it to you.Byblos wrote:
The reason is very simple and very logical (and I and Jac have stated it many timers before, in this thread and others). But it keeps coming up again and again so I guess it's worth repeating.
First some background review: From reason alone we can deduce that the uncaused cause must be atemporal (i.e. eternal), immaterial (not composed of matter), and immutable (unchanging, i.e. asbsolutely necessary without any contingencies whatsover (pure actuality), for if it were contingent it would then be dependent on another and therefore not the first uncaused cause and not pure actuality).
Now if there were more than one pure actuality then there must be some way to distingwish them. And if there were a way to distingwish them then there must be something that one of them lacks and the other one doesn't. But if one of them lacks something it would then be contingent, depending on another for the feature it lacks and therefore would not be pure actuality.
But if there were two of them that are absolutely identical without any distingwishing features then they would be one and the same and cannot be two. Therefore pure actuality (or the uncaused cause or the unmoved prime mover) must be one and only one.
It's not an easy topic to understand, although the logic itself is quite simple.