Would a Universe-Mass Black Hole Trigger a Big Bang?

[bananan]

If a black hole had the mass-energy of the entire universe, all mass and all energy, same mass-energy as the singularity that preceded the big bang, (energy was left out due to space)

would that black hole explode in a big bang, as the big bang singularity did?

If you had a black hole with the same mass-energy as the singularity which gave rise to the big bang, how would you tell apart the black hole from the singularity?

 

[Farsight]

Hmmn. There's a few things in that question that maybe need some comment:

Some would say that the net energy of the Universe is very close to zero.

Some would say that nothing "preceded" the big bang, because that was when "time" started.

Some would say there was no singularity involved with the big bang.

Some would say the Universe is a black hole.

All this makes it difficult to give you any answers.