I don't know if the author is being sarcastic but: > To that, I propose base-2 exponentiation based on the scale you care about in the first place, time. > 1,

I don't know if the author is being sarcastic but: > To that, I propose base-2 exponentiation based on the scale you care about in the first place, time. > 1, 2, 4, 8. Hours, days or weeks. I think this is actually a pretty good system. The point being that estimates get less fine grained as the size of the task increases, which is pretty sensible.