1) nearly every galaxy has a central super-massive black hole 2) galaxies commonly collide and merge to form new, more massive galaxies. [...] The two black holes gradually in-spiral toward the center of this galaxy, engaging in a gravitational tug-of-war with the surrounding stars.
If this was a comment on the life of corporations, I would mod it "Insightful" (just substitue "galaxy" with "corporation" and "back hole" with "CEO").
Just goes to show you, micro and macro-scale ecology is eeringly similar. I think we need a lecture on fractals and how they apply to this situation.