[phkahler]

I see false positives. So last week I decided to do my first project that will use a Raspberry Pi. I googled around to the pi site, amazon, newegg, (gasp) radio shack, microcenter, etc... I figured out what I wanted to get but didn't put anything in any carts. So then Pi ads start showing up on Facebook. IIRC a Radio Shack Pi ad too. Whatever. But now when I buy one, is Facebook going to claim some responsibility for the sale? Because they honestly don't deserve it. I'm going to buy one anyway and I have not seen an ad for a place I didn't look already. While I often give a real store the business based on "I can get it on the way home" the price difference in this case is nuts. So NewEgg it will be and Facebook ads aren't going to influence that.

In this case, correlation does not indicate causation.

[jeffchuber]

causation is implied on a population through test and control. causation and correlation for an individual is almost always impossible.

[phkahler]

So are they going to use statistical models to figure out how much to charge for ads? That seems like a hard sell.