Comment by cryptonector
4 days ago
See https://news.ycombinator.com/item?id=42660606 (yesterday). Writing is not a reversible computation, therefore it requires an increase in entropy.
4 days ago
See https://news.ycombinator.com/item?id=42660606 (yesterday). Writing is not a reversible computation, therefore it requires an increase in entropy.
You write something at T, under normal background conditions of increasing entropy. Entropy at some T+n fluctuates to a minimum, and at T+n+1 begins to rise from that minimum. None of this appears to necessarily reverse what you've written at T?
If you've made some state change that amounts to irreversibly changing information, then you've increased entropy, full stop. I believe TFA is obviously correct that closed timelike loops involve forgetting, thus no time travel paradoxes.