The laws of physics are presumed to be reversible, and this means that there is a precisely equal number of trajectories going from low entropy to high as going from high entropy to low.
This is one of many different versions of the reversibility paradox.
Welcome to the March 2023 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy!