So much for thinking I was good at brain-teasers. Today, I came across this TED-Ed video (see video below) created by Dan Finkel, and at first, it seemed like it would be pretty easy to solve. So much for first impressions. I gave myself 30 minutes to solve the riddle, and if it didn't happen … Continue reading I Couldn’t Solve This TED-Ed Riddle – Even After I Saw the Answer →