I think you probably could write a similar collection of arguments against your own position with the same or greater strength. I'm surprised at the 80% number - that's pretty confident. Then again, it's a little strange to boil it down to a number like that - as you allude to, it's going to vary considerably based on who the person is, and different people likely mean different things when they talk about the population of people who should be considering earning-to-give over direct careers. I think it's clear there are people who will have more impact in each category, and we're debating where the line is and what sort of people belong in what group.

I'll shoot you an email - thanks for that.