I try not to nitpick and let people on HN story tell a bit, it's fun reading. However, if I were to join you on the nitpicking, I'd further: Who is to measure "

I try not to nitpick and let people on HN story tell a bit, it's fun reading. However, if I were to join you on the nitpicking, I'd further: Who is to measure "important" - oil and coal related products (automotive/electricity) may end up being the most important because they are our undoing! =)