“The “quantified self” movement is really just the battery-powered version of the ancient human quest to know thyself, a desire as old as philosophy.
“Quantified self” practitioners as a group are not necessarily curious about human values or an understanding of what makes us human. They’re more interested in anything that can be measured and given a number. They believe the maxim that only the things that are measured can be improved. But I see a lot of measuring, but not much improvement.”
Full article here: Computer World