I'm not going to engage in a flame war over this, but suffice it to say that this is pretty much exactly the misunderstanding I was referring to with that quote.
Most data Facebook collects is of the form (user saw this post, user clicked/did not click this post). That data's value is tightly coupled to the process Facebook used to decide whether or not to cause the user to see that post. The data only has value in the context of iterating on that process.
Most data Facebook collects is of the form (user saw this post, user clicked/did not click this post). That data's value is tightly coupled to the process Facebook used to decide whether or not to cause the user to see that post. The data only has value in the context of iterating on that process.