Sure, although you'd probably be better off with strong by default with opt in weakness. The amount of testing and verification in making sure something like P

Sure, although you'd probably be better off with strong by default with opt in weakness. The amount of testing and verification in making sure something like Postgres runs well on a different memory order more is substantial. Adding the flag at the end is trivial. This way around, software is correct by default unless it explicitly asks to be unsafe.