So do you mean people like engineers, financial quants, the Make community, bright-eyed humanities graduates? These people are generally not dumb. But I am still having trouble imagining what would you want to do inside their heads.

The first group of people I thought of was lawyers, who have both a higher-than-average baseline understanding of applied cognitive science and a strong built-in incentive to get better at it. I wouldn't stop there, of course; all sorts of people have reasons to improve their thinking and understanding, and even more have incentives to become more instrumentally effective.

As to what we'd do in their heads... same thing as we're trying to do in ours, of course.