Although there are justifications outside of quantum mechanics if you, for example, already believe in the laws of thermodynamics. If computation didn't create

Although there are justifications outside of quantum mechanics if you, for example, already believe in the laws of thermodynamics. If computation didn't create entropy, you could reverse entropy. Of course, now it goes the other way. Since the universe runs on quantum mechanics 'below' thermodynamics, entropy can't be reversed because doing so would imply computation without entropy.