[ksk]

You're talking about a tiny sliver of people who are savvy enough to try out this stuff. Most people I know never "try out stuff" when it comes to computers or phones or any other sufficiently complex electronic device. Heck, there is no desire to explore the interface as it exists now. Sure, if you show them some new feature, they might go - that's cool, and never think about it again. They see these things as simple patterns - To do this operation I do that and that's that. And whats interesting is this applies to highly intelligent people. I work with scientists who are extremely intelligent people, and they have trouble with email or installing software.