Lee Smolin Quote

One of the evident facts about the world is the stability of empty space-time. In classical general relativity we can explain this as a consequence of the positive energy theorem... the positive energy theorem must extend in some suitable form to any viable quantum theory of gravity.

"Positive energy in quantum gravity" arXiv (Jun 10, 2014)

One of the evident facts about the world is the stability of empty space-time. In classical general relativity we can explain this as a consequence...

One of the evident facts about the world is the stability of empty space-time. In classical general relativity we can explain this as a consequence...

One of the evident facts about the world is the stability of empty space-time. In classical general relativity we can explain this as a consequence...

One of the evident facts about the world is the stability of empty space-time. In classical general relativity we can explain this as a consequence...