I like his articles, but this one is silly. 4 Messages on 4 blogposts and he's drawing conclusions? That little data doesn't warrant any conclusions: too many u

I like his articles, but this one is silly. 4 Messages on 4 blogposts and he's drawing conclusions? That little data doesn't warrant any conclusions: too many uncontrolled variables. Results might as well be random. Audience, and expected clickthrough rate, per post topic may differ, the effect of repeating the implorement several times kicks in and if I bothered to give it some more thought, I could probably come up with ten other reasons that could explain the results. That was even possible after the first set of measurements in my physics graduation experiment; let alone in sociology/psychology.