The solution to our current miserable state?

From the New York Times’ Evening Briefing:


Shimpei Ishiyama & Michael Brech

9. Finally, rats are ticklish. That’s what some accomplished researchers have determined.
The rats really seemed to like it. They sought out the researchers’ hands, made joyful leaps and emitted some ultrasonic calls considered to be their equivalent of laughter.
The purpose was actually quite serious: to learn why we evolved to be ticklish. It may be a “trick of the brain to make animals or humans play or interact in a fun way,” said one researcher.
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