@evan, I'll echo @LyallMorrison: I reject the premise of this follow-up question, too. Why would there be a single “best” proportion, for those purposes? I believe there's no such single optimum.
@evan, I'll echo @LyallMorrison: I reject the premise of this follow-up question, too. Why would there be a single “best” proportion, for those purposes? I believe there's no such single optimum.