[joe_the_user]

Whenever you say "that made no sense", I think that you are using too much bias and not giving enough credit to what the data is telling you.

What? If a data scientist sees something seems illogical, there is no reason not to investigate it and see if he/she can find a more logical explanation. Sure, if the effect seems real but unexplained, you can accept and use it but advocating a kind of big data mysticism, "don't investigate, accept" seems to be buying into the senseless hype. And if you read the post, you'll notice the parent actually discovered the association was just an artifact of an easily explained association.

And, no, there's no much reason for companies to advertise just a TV stand and DVD player. Common sense tells one what the data actually data, that those two items, by themselves aren't and weren't what many people were just dreaming about.