"Most knowledge workers believe that email is a passive tool they choose to use to make their real work easier. But as the Big Blue engineers discovered three decades ago, this technology is not passive; it instead actively changes what we mean by "real work.""

To summarize the findings: because they didn't teach to the test, the professors who instilled the deepest learning in their students came out looking the worst in terms of student evaluations and initial exam performance. To me, these results were staggering, and I don't say that lightly.