* Turns out, folks are seeing the "buy" button just fine. They just aren't smitten with the product. Making "buy" more attention-grabbing gets them to the decision point sooner, so they close the window.
* Turns out, folks see the "buy". Many don't understand why they would want it. Some of those are converted after noticing and reading an explanatory blurb in the lower right. A more prominent "buy" button distracts from that, leading to more "no".
* For some reason, a flashing puke-green "buy" button is less noticable, as evidenced by users closing the window at a much higher rate.
Including untestable reasoning in a chain of hypothesises leads to false confirmation of your clever hunches.
* Turns out, folks see the "buy". Many don't understand why they would want it. Some of those are converted after noticing and reading an explanatory blurb in the lower right. A more prominent "buy" button distracts from that, leading to more "no".
* For some reason, a flashing puke-green "buy" button is less noticable, as evidenced by users closing the window at a much higher rate.
Including untestable reasoning in a chain of hypothesises leads to false confirmation of your clever hunches.