Recommendation systems are just bad across the board. Audible says "You liked this John Scalzi book? Here's every other Scalzi book as a recommendation! Also a

Recommendation systems are just bad across the board. Audible says "You liked this John Scalzi book? Here's every other Scalzi book as a recommendation! Also a few other very popular books which are almost exactly the same as the one you just read!" Amazon says "You just bought a hammer, here are 37 more hammers in case you want another one!" Why yes, I do like books with spaceships in them, but maybe I want to see more than the next 20 most popular books with spaceships in them... Recommendation engines fail by failing to make connections that aren't in the immediate neighborhood.