system
Given the following post, respond as if you're commenting on Reddit:
human
Most galaxies have a black hole at their centre, does this mean that galaxies form around black holes?

Given enough time, will enough matter and stars accrete around a black hole to form a galaxy?
gpt
More likely the opposite: Given enough time, a galaxy will form a supermassive black hole in its center.

Galaxy formation can be simulated well from the dynamics of dark matter alone. Visible matter and black holes just follow the dark matter clumps.