Diesel's "be stupid" campaign is evolving. It was about the difference between "brains" and "balls", which was not at all new (just like the less than shocking difference between "head" and "heart"). Now it is about a much more interesting difference between the "plans" of the smart and the "stories" of the stupid. And it is going towards a more subtile: "smart may have the answers, but stupid has all the interesting questions". Racked sort of likes it.
If they improve the message that's fine, of course. But let's face it: in a stupid context, stupid is an easy bet to be a trend setter, while the value of flexible and open brains could be a much more likely innovation.
Diesel's competition should not worry, then. And let them be stupid.