This heated (environmental) debate is fundamentally about numbers. How much energy could each source deliver, at what economic and social cost, and with what risks? But actual numbers are rarely mentioned. In public debates, people just say Nuclear is a money pit or We have a huge amount of wave and wind. The trouble with this sort of language is that its not sufficient to know that something is huge: we need to know how the one huge compares with another huge, namely our huge energy consumption. To make this comparison, we need numbers, not adjectives.