We can't accurately meter our performance, intelligence, and behavior. We also can't control our environment (not realistically anyways). So, it's anecdotal.

We can't accurately meter our performance, intelligence, and behavior. We also can't control our environment (not realistically anyways). So, it's anecdotal. I'm excited for sensor networking to get in the body, so we can actually measure the effects of our consumption. Then again... that doesn't measure behavior, or intelligence. It's a hard problem.