You are right! I must have been thinking of different types of efficiency and written very unclearly. A pet peeve of mine is people talking about "efficiency" i

You are right! I must have been thinking of different types of efficiency and written very unclearly. A pet peeve of mine is people talking about "efficiency" in energy and not defining it or switching between definitions sloppily, and I seem to have done it there. In any case apologies for not being consistent.