you go to plug in your thumb drive. You try once. Failure ensues. Metal clashes with metal. Humiliated and discouraged, you flip it and try again. Failure, again! How could this be possible?
I hoped the article would explain also why the above happens, not just why the design decision which leads to the above was made.
Although I think it's not just the shape, but a combination with other things. Thingking in the direction of: most ports are all black and/or hard to reach so from a distance you just don't see where exactly it will fit so you just try and don't get a proper match. I.e. I never ever have this problem when pluggin into a socket which is right before my eyes and/or e.g. has the central plastic piece in white since then you can clearly see how to match them. Further ideas?