The End State of Systems that grow by Accretion

Brian Kernighan and Adam Gordon Bell discussing the origin of Unix (from https://corecursive.com/058-brian-kernighan-unix-bell-labs):

Adam:

… So you guys, you’re in the Unix room, you were building all these little tools and the tools were starting to accrete and like Node.js, is just a world that is accreted all of things, or Python. So it’s just that the end state of this process or something.

Brian:

Yeah, it probably is. Accretion is probably the right world, and I don’t know how that ends if it ever does.

In physics the end state of a system that grows by accretion is a black hole.