"The problem with the designs of most engineers is that they are too logical." #readingToday

Engineers are trained to think logically. As a result, they come to believe that all people must think this way, and they design their machines accordingly. When people have trouble, the engineers are upset, but often for the wrong reason. "What are these people doing?"they will wonder. "Why are they doing that?"The problem with the designs of most engineers is that they are too logical. We have to accept human behavior the way it is, not the way we would wish it to be.

Design of Everyday Things Revised, Don Norman