Have you had the chance to play with a Blackberry Storm? Or a Palm Pre? Did you get the feeling that the touch screen, the primary input device, just didn’t feel as good as the iPhone? I’m not talking about the ignored taps that the Google Android suffers from, but that, “darn, I’m sure I tapped the right spot, but I sure didn’t get what I wanted” feeling. It turns out there’s a quantifiable reason the iPhone touch screen seems to work better.