Does causality principle still have meaning when space-time dissapear(before BigBang)

  • #1
519
0
Please teach me this:
What does causality principle mean when space time dissapear(e.g being inner blackhole or before Big Bang).Does it meaningless to say about causality when having not the time.
Thank you very much in advance.
 

Answers and Replies

  • #2
bcrowell
Staff Emeritus
Science Advisor
Insights Author
Gold Member
6,723
423


What does causality principle mean when space time dissapear(e.g being inner blackhole 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."
 

Related Threads on Does causality principle still have meaning when space-time dissapear(before BigBang)

Replies
2
Views
1K
Replies
4
Views
207
Replies
7
Views
479
Replies
15
Views
7K
Replies
30
Views
527
  • Last Post
Replies
2
Views
1K
Replies
10
Views
5K
  • Last Post
Replies
1
Views
4K
Top