Right; and the people in the "What is a browser?" video [1] are not stupid; they're busy, have adapted very well to the extreme compartmentalization of 21st century Westernized life and knowledge, and are largely uninterested in what we know as computing. To invoke a central theme of "Paradox of the Active User" [2]: they're all experts in one field or another, and would make many a hacker here look like someone who doesn't know what something as supposedly generic as a "browser" is in their respective fields. That's far from "stupid".

You could replace a good 80% of the instances of "stupid" with "busy" in design discussions, and you'd end up with better discussions.

[1] http://www.youtube.com/watch?v=o4MwTvtyrUQ

[2] http://www.useit.com/alertbox/activeuserparadox.html