7:21 PM
@ManasDogra Uh, everything in quantum mechanics is reversible.
Oh I see what you're asking.
Yeah there's a pretty deep connection there. Wave function collapse is more or less a shortcut for saying "the thing I am observing interacted with some other degrees of freedom, so information is now held by stuff that I'm not observing, and as a result, the system I am observing appears to have collapsed".
The whole notion of "heat" in thermodynamics comes form the idea of describing a system with many degrees of freedom by only a few "macroscopic" degrees of freedom. We knowingly ignore a lot of information about the system when we use thermodynamic language.