Or why any ecommerce keeps recommending more and more products like the one you just bought and you'll never buy again for the next few years?
Either everybody actually buys more and more of the same stuff until they fill their houses or the algorithm designers are following the easy road and not the one that models reality.
Either everybody actually buys more and more of the same stuff until they fill their houses or the algorithm designers are following the easy road and not the one that models reality.