First Way, Part IV: The Cascades

P revious episodes in this exciting series, now drawing toward its thrilling climax:

Background lays out the history of the Argument from Motion and the impatience of those who demand that it prove more than it asserts to prove (e.g., that it prove that Jesus is Lord or some such thing, as if the objector were genuinely concerned about this shortfall).
Part I A Moving Tale discusses the concept of "motion" used in the Argument from Motion, and how this is persistently misunderstood today.
Part II Two Lemmas demonstrate that

Whatever is being actualized right now is being actualized by another.
There cannot be an infinite regress of instrumental changers,

Part III: The Big Kahuna combined the two Lemmas into the first theorem and its corollaries
A number of objections and misunderstandings were also addressed in these prior posts.

We are now ready for Thomas' throwaway teaser: "and this [the unmoved mover] is what all men call God." Folks who have never read any further (if they have even read that far) are often puzzled. How do you get God out of that? TOF hears them cry in bewilderment.

The answer lies in the several hundred further Questions and Articles in which these points are developed. In the interests of brevity, a few subsequent proofs will now be stated without extensive arguments, but ought to be intelligible in the light of what has already been said.
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