"Too Many Kooks Spoil the Brothel" wrote in
message oups.com...
The collapse of matter towards the formation of a black hole should
slow down indefinitely, observed "from outside", as it comes nearer and
nearer to forming a horizon. Given the finite age of the Universe, I
cannot see how any could by now have formed. ...


It cannot be observed "from the outside"
That is why they are called black holes.