Here’s a question.
Say technology makes mind melding possible, so that you can be together in the same thought-space while retaining your self. Who has the right to say they were there first? Everyone is first in their own head, but if “their own head” is 2+ heads, there are as many firsts, even though one is probably older (and one Original), and one, both/all, or none of the above/below (except Original) may have consented to the meld. So whose house, whose rules? Revert to Golden!