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Funny thing, as you say and I agree that time is our only true currency, there's a physicist trying to prove that time doesn't truly exist, at least not how we perceive it. Pretty fascinating stuff, if it's true. Still an interesting theory even if it's not.

Any source?

I appreciate the effort to expand the limits of our consciousness, but I've found theories like this are often based on pedantic classifications of matter and/or general relativity.

Yep. Here you go. Carlo Rovelli.

https://www.nature.com/articles/d41586-018-04558-7

It sounds interesting, but unless he truly redefines some concepts, I just can't see how his hypothesis is true.

Thanks for sharing though, I always dig this kind of stuff!