One thing I see a lot on HN is programmers and other highly technical users assuming their behavior reflects typical user behavior. That is quite often simply not the case.
I would definitely not be surprised if that were shown to me. I guess that's why we do A/B testing and other confirmations of our assumptions. Things that seem like they wouldn't work often do, like making a button green, or making the checkout two steps instead of one increasing conversion.
Humans are wierd.