Well, here’s how I framed my problem earlier. This is all supposing that
Newton’s first law of motion is true: “Change of location seems to me to be change in the strict sense as well. An object is **potentially **at point A, and then is **actually **at point A, even though it was not put there directly by something else. This is a change from potentiality to actuality. A genuine change, it seems to me.”
I don’t know much about newtons law of motion, but from what you say here this seems to me to be a legit example of a potentiality being realised in a new location. Whether his law of motion is possible or not is a different question; but at least as long as his law admits of genuine change, then its okay.
The problem is that this seems to be a counterexample to Aquinas’ principle. Thanks for your help.
I suspect that you misunderstand Aquinas’s argument. You are treating it like a scientific argument.
Well, firstly, as I pointed out earlier, nothing physical changes purely in reference to itself. It changes in reference to other beings conditions or natures. For instance, if there is no space, one cannot meaningfully speak of “
physical change” or a physical movement to a different location. Thus there are other
kinds of causes. However some physical objects do move without a
direct cause in the
classical sense of one ball pushing another ball. But still, the ball moves in reference to something else or because of something else non-the-less. In general, all change amounts to the realisation of something that wasn’t real, actual, or true.
Secondly, when Aquinas speaks of effects having causes, he is speaking of a cause in the sense of sufficient
esse. He is not talking about physical causes. He is talking about the fact that out of nothing comes nothing. Thus if a thing moves from one potential state to the next, this means something has been added that state which did not exist in the first place; in this case, the moving of the ball to a new location, or to a future moment in time. Potentiality cannot come from nothing. Potentiality must be grounded in reality and expressive of reality otherwise it is nothing and will always forever be identical to nothing. That the ball was moving, certainly explains why its in a new location (that’s the scientific explanation), but that does not explain its potentiality to be in a new location, and neither does any possible cause that is itself in potentiality, since the power of its ability to cause something or create a condition in which physical events occur is derived from other potential contingent states of reality.
All of the potentiality or change that exists or will exist - in order to be realised - requires an existential cause; ie, an absolute being that exists absolutely without change or potential in its existence. The universe is one big chain of potentiality; its dynamic. Anything that changes or moves can certainly be said to have participated in the act of reality; but it is not reality by its
own nature or form. When a ball comes in to existence, its does not exist because it is a ball, because if that were true, than it would have timelessly existed since it is in the intrinsic nature of a ball to exist irrespective of change. In other words, the reason for the existence of potentiality cannot be itself a potential being, since the existence of potentiality would be left unexplained as if to come out of nothing. The reason for its existence has to be reality by “nature” rather than by participation, and it has to also sustain in existence all potential reality, since potential reality by itself without being is nothing.
This is why no dynamic science could ever dethrone Aquinas’s arguments, because they deal with change in general and being as an “act”, rather than the details of a particular thing or nature (which is the province of science).Thus Aquinas’s arguments are compatible to any “dynamic” science that remains within the confines of its epistemological limits. So, arguments like… “science proves that world popped out of absolutely nothing by itself”… will not earn you any respect on this forum, simply because it exposes those who speak such nonsense as being ignorant about the epistemological limits on what science can say about reality. So do your self favour.
You will probably say something annoying

. Let me just say right now that if I suspect that you haven’t properly read what I have said, I will not answer you again. So it will do you a great deal of good to answers this post honestly. Thanks for reading.
Ps. Have you read Edward Fessers book yet?