The Computational Nature of Space-Time?

Two good SciFI novels I’ve read recently:

Revelation Space by Alastair Reynolds

River of Gods by Ian McDonald

Both follow a trend I’ve noticed in modern SciFi. Quantum Mechanics, and to some extent String Theory, seem to have moved into genre canon.

As hard sciences go, if you can call these hard sciences, both String Theory and Quantum Mechanics use very romantic language to describe the processes they model. Not only does the language lend itself to good prose, the incomplete nature of the theory and the strangeness of the results blend seamlessly into fiction.

Given that this is great material to work with, I’m not surprised that SciFi authors are writing about it a lot. The reason I mention these two books together is because they arrive at a similar place once they depart from common theory. The idea the authors present is that at its lowest and most fundamental level, matter and space are capable of computation.

My question then is the following: Are there any grounds to believe that computation is something fundamental about space-time? I’ve read The Elegant Universe by Brian Greene and I don’t remember any established theory pointing in this direction.

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The Computational Nature of Space-Time?