Simulation part was a joke. But the static, unchangeable past is interesting because: 1. assumption that the past is static and can't change is not crazy and i

Simulation part was a joke. But the static, unchangeable past is interesting because: 1. assumption that the past is static and can't change is not crazy and if retrocausal influence exists, it could imply Many Worlds interpretation as more plausible - there must be at least 2 different universes with static past if you can choose at present past A or past B. The joke is that branching universes creates large overhead costs (n unmerged, binary branches create 2^n universes to keep track of) in simulation that can crash it.