Resolution Independence
All over the Mac rumor sites, I've been seeing speculation on iPhone OS 3.0. Apple announced that it will be discussed in a few days, so this is normal enough. What prompted this post is the utter wrongness of some of the speculation.
For a few years, Apple has been planning a feature called "resolution independence". For some absurd reason, people think this means iPhones with bigger displays or tablets or netbooks running iPhone OS. It does not mean this at all.
Resolution independence is intended to make user interface elements the same physical size on any monitor, regardless of the resolution of that monitor. This means that if you have an element that should be one inch long, it will be 72 pixels long on a 72 DPI monitor, 100 pixels long on a 100 DPI monitor, and 163 pixels long on an iPhone with its 163 DPI display. Essentially, it does the opposite of what these clowns think it does. It means that very small, very high-resolution displays don't make the buttons and text smaller, they just make everything sharper at the same size.