In short: Did you know one must destroy eggs to make an omelette? Yes, it takes energy and resources to build things, including "green" things. Pointing out t

In short: Did you know one must destroy eggs to make an omelette? Yes, it takes energy and resources to build things, including "green" things. Pointing out that it is non-zero is hardly an insight. The question is (a) whether the result, in net, is better than the current situation and (b) whether the same investment in other techniques will yield even better results.