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## Main Question or Discussion Point

Kip Thorne says (Lecture in 1993 Warping Spacetime, at Stephan Hawking's 60th birthday celebration, Cambridge, England,)

I thought classical time was always symmetric ....apparently not. Is this same description applicable to a "big crunch" as well? Apparently Weyle curvature at the big bang and black holes seems to go to infinity while at the big crunch it's essentially zero....how does that relate to this "direction" of time??

Comments, interpretations, appreciated.The flow of time slows to a crawl near the horizon, and beneath the horizon time becomes so highly warped that it flows in a direction you would have thought was spacial: it flows downward towards the singularity. That downward flow, in fact, is why nothing can escape from a black hole. Everything is always drawn inexorably towards the future, and since the future inside a black hole is downward, away from the horizon, nothing can escape back upward, through the horizon.

I thought classical time was always symmetric ....apparently not. Is this same description applicable to a "big crunch" as well? Apparently Weyle curvature at the big bang and black holes seems to go to infinity while at the big crunch it's essentially zero....how does that relate to this "direction" of time??

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