system
Given the following post, respond as if you're commenting on Reddit:
human
Over time, can all black holes merge and swallow the entire universe?

This would potentially happen tens to hundreds of billions of years in the future. Would it be possible (or even physically plausible) for all the black holes in the universe merge into one enormous black hole? After that, could that black hole subsequently consume everything in our known universe?
gpt
Possible yes, plausible no. We live in a universe where A. black holes tend to have stable orbits around them and B. everything is getting farther apart. Those factors combined, it is not expected for most of the universe to end up in a black hole.