Yep, if I liked one book by G. R. R. Martin, it makes sense to suggest I would like another one. If I bought one Samsung tablet, it's much less likely I'd need another one a week later, unless that one was defective. They should introduce more information about goods - but it's probably too expensive to model that, and they get paid handsomely anyway, so why bother.

Even if that one was defective, you're likely to exchange it (especially if you're buying from Amazon). Not buy a whole new one.