Near-zero percent of people is any close to knowing themselves. Begin able to assess your expertise and capability in particular area is a useful skill yet it doesn't mean knowing your actual self. The first step toward actually knowing yourself is observing your own feelings, thoughts and behavioral patterns "from a distance" breaking free from the habit of taking them too seriously.
We somehow hoped that the internet would improve the signal-to-noise ratio in human knowledge.<p>Whatever we're doing has to be making individuals more mature to be valuable.<p>Whether this research is a bug or a feature remains to be seen.