A short guide to GDP

Higher productivity means you produce the same amount with less inputs. Does the reduced consumption of some things - say, energy - increase or reduce GDP?

For the last 42 years my sister and her friend have grimly and grittily edited a little journal called The Book Review. Snobbishly, they only review academic books; and, cloyingly, children’s books. 

I regularly steal books of both types from there. When I get caught they make me write a review. But often, I manage to avoid writing it by the oldest trick known to reviewers: Postpone till your pursuers give up. 

Anyway, the other day while looking for some other book at home I found one I have no recollection of buying or borrowing. I had probably stolen it from my