> But the fact is, the commenter was wrong about his priors. Actually someone who buys a ladder is indeed more likely to buy another one ... even if most people that buy ladders only buy a single ladder. The fact that you bought a ladder, puts you in the cohort of people that buys ladders, which means you are more likely to buy another one than someone who isn't on the record buying a ladder.

Be that as it may it’s still ridiculous. There are very many other things I am going to buy before I buy another ladder. And Amazon should be able to know that because of having seen me search for very many other things in the past that I have not yet bought.

And if nothing else, couldn’t they let me at least click a little button next to any suggestions to tell their algorithm that no I am not interested in this recommendation?