Why are we still talking about this? Computers are INCREDIBLY efficient and still become orders of magnitude more efficient. Computation is really negligible in the grand scheme of things. In the 80s some people also said that our whole world energy would go to computations in the future. And look today. It’s less than 1%. We do orders of magnitude more computations, but the computers have become orders of magnitude more efficient too.

As another way to look at this, where does this questioning of energy use end? Should I turn off my laptop when I go to the supermarket? When I go to the toilet? Should I turn off my lights when I go to the toilet?

My point is, we do a lot of inefficient things and there is certainly something to being more efficient. But asking “is it efficient” immediately when something new is presented is completely backwards if you ask me. It focusses our attention on new things even though many old things are WAY more inefficient.