this blogs not really much about blackholes as much as imagination related to what may be inside them.
Since the nothing can escape a black hole.. not even light.. then everything inside it is actually getting very dense with each addition.. well .. i think the assumption is that a black hole's central density is infinite... now if u look at the big bang.. we presume that it started from one infinitesimally small point with infinite density which some how got a push...
Essentially, a black hole could possibly be compared to this.. with its infinite density and extremely small radius.
Could it be possible that at the center of every black hole resides a baby universe.. or maybe a universe waiting to be born.. that would be pretty cool huh?