How much can we raise the sanity waterline without transhumanism (i.e. assuming current human biology is a constant)?
As phrased, the parenthetical assumes that biological improvement is the only or primary cause of raising the sanity line. That is not necessarily true—I personally suspect it is false.
As phrased, the parenthetical assumes that biological improvement is the only or primary cause of raising the sanity line. That is not necessarily true—I personally suspect it is false.