Good question and is it related to the “missing gene pair” (other primates 24).
If you accept general reincarnation concept, is there also a “memory dump” in the human code to disconnect us from source or whatever you deity you want to call it?
ergo )and excuse 17 socratic style)
what would one’s perception of now be like if all previous existences were remembered?
would epigenetic healing be easier?
would we tolerate the degree of suffering we do now if we knew the full history?
would we have eradicated evil perps long ago?