The Plus: Part 3, Keep Diverging

The nine-dot puzzle has been around for decades. Connect all nine with four straight lines…without lifting your pen. In the control group, nobody solves it. Then researchers temporarily suppress the rule-following part of the brain with electrical stimulation. Forty percent crack it. The puzzle didn't change. The rules didn't change. The frame did. This is Part 3 of The Plus. We get into…