Quote Originally Posted by halfeye View Post
Large in this sense isn't large on interstellar ranges. It's 4+ lightyears to the nearest star, the radius of a SMBH will be less than one light hour.
Why does something have to be "large in interstellar terms" in order to take a long time to build? Let's go and tell those slackers who built the M62 that they should have taken way less than five years to build a mere 107 miles of road!