Does Causality Have Meaning When Spacetime Disappears?

[ndung200790]

Please teach me this:
What does causality principle mean when space time dissapear(e.g being inner black hole or before Big Bang).Does it meaningless to say about causality when having not the time.
Thank you very much in advance.

 

[bcrowell]

What does causality principle mean when space time dissapear(e.g being inner black hole or before Big Bang).

The only well-verified theory of gravity we have is general relativity. In cosmological models based on GR, time exists for t>0. For any time t, causality is satisfied in the sense that conditions at that t are caused by conditions at earlier values of t.

Does it meaningless to say about causality when having not the time.

Yes, it is meaningless. If there is no spacetime, there is no "when."