Inside of a black hole light can travel at any damn speed it likes. But often times it likes to pull over, get a bite to eat, and just take a break from rushing about the universe at 300,000,000 m/s.
This also will clearly show how astronomical black holes are formed from microscopic black holes due to the variation of the speed of light inside of the black hole itself.
So, the Swarzchild radius of a black hole is shown thusly:
http://upload.wikimedia.org/math/6/9...2a42796523.png
And is an inverse square relationship to the speed of light.
Since we take for granted that microscopic black holes exist (it would be foolish not to, given all the evidence...), what happens is this: A microscopic black holes forms due to a random event, let's say a scientist waving his hand. Then a beam of light enters into this microscopic black hole. Since the speed of light is completely variable inside of a black hole, it oftentimes slows down, as submitted above. When the speed of light slows down, it can then be clearly seen that Swarzchild radius gets larger. This is a self-perpetuating cycle,as the black hole expands, it sucks in nearby stuff, cars, boats, trains, trees, and when more fully expanded: moons, planets, stars, and green clovers. Also more and more light gets drawn in, it creates photonic traffic jams, accidents, etc, etc, all of which further slow down the speed of light, thus directly leading to the expansion of the microscopic black hole to astronomical dimensions.
This obviously can lead to disasterous results.
So, it can also be clearly seen that it is best if scientists do not resort to simple hand waving when presenting theories.