I think this is an interesting summation, although it may be a bit too minimalist.
I’m also not sure I’m onboard with this:
Rule 3: The best interface is no interface.
In many ways, by limiting our choices, interface can make our interactions easier and more directed, because it gives direction and focus to what it contains. To use Godin’s metaphor, a shampoo bottle gives shape and purpose to the shampoo inside. Otherwise it would simply slide down the drain…