Re:

Lisa . thanks, for your time,and patience if i understand the Kerr equations , and your explanation correctly , time and space , appear to exchange coordinates inside a black hole. that assumes that time is unidirectional. doesn't it appear that if you ran negative time , it would look like any other explosive transaction. great acceleration. emenating from the second horizon outward slowing to a mere expansion . It would appear that " time" got shot out of the black hole. created by a space collapse at the singularity.

thanks , question , what does it look like if time is running backward , wouldn't it be decelerating into flat space from the singularity outward, therefore explosion then expansion. It looks like big bang, not inflation before horizon. So not explosive expansion. but always slowing after crossing the horizon . after crossing horizon there isn't really a cosmological interpretation anymore. Time and space have switched back. looking in reverse it appears things accelerate as they approach, charged would be as a result of the deceleration. don't understand this last comment.

Hi Jeffrey. It was interesting-as always. For your question, let's first straighten out that there are 3 types of bhs we might be discussing: Schwarschild, charged, and Kerr. I didn't say much about Kerr--I mostly discussed charged-- since they are changing with time and a bit more complicated but indeed they have 2 horizons (just like charged black holes). Two horizon scenario means time and space switch twice so at singularity you are back to ordinary time space identification. So let's first just consider Schwarzschild (uncharged, not rotating). In that case you are on the right track. Reversing time and coming from the singularity, it pretty much looks like a 2d big bang scenario (with the other 2d in a compact sphere). Space expands out until you reach the horizon and eventually goes over into flat space. It's not really accelerated expansion but still somewhat along lines you suggested. If there are two horizons (charged black hole case) and you are in between them (we called this Whoville becuase it looks like space has shrunk to zero but actually spacetime has not and there is a finite time between them so there's a whole world invisible to the outside) what happens is you alternate between big bang and big crunch in the full extended spacetime.

Oops. Problem of email. No offense intended. I was really a little confused. Or were you joking?

joking, for me, space and time are disconnected as my fingers hunt for keys

Any availability in the spacetime continuum today or tomorrow?

if 2 is good is there a number to call?

What happened? I'll skip bad spacetime continuum joke. I'll be back about 6. Let me know if you will have time.