What do we say that time is an illusion

Question

Some article talking about that: [https://www.nature.com/articles/d41586-018-04558-7#:~:text=According%20to%20theoretical%20physicist%20Carlo,of%20a%20universally%20ticking%20clock](https://www.nature.com/articles/d41586-018-04558-7#:~:text=According%20to%20theoretical%20physicist%20Carlo,of%20a%20universally%20ticking%20clock).

I really don’t understand how time can be an illusion. I mean that I know that what I’ve done before is done and I can’t change it.

So how can we say that time is an illusion?

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thanks

In: 0

Answer 1

The Order of Time presents a theory called loop quantum gravity. In this theory, space and time are not fundamental components of the universe, but emerge out of more fundamental structures when appropriate mechanics are at play.

This is not an accepted physical theory, it’s one of several possibilities for physics beyond standard quantum field theory. The book got mixed reviews on technicality, but it’s probably not a terrible source if you want to learn more.