A closer look
In 1981, French psychologist Michel Gauquelin proved exactly how gullible we all are. He placed an ad offering a free, highly personalized astrological profile. Over 150 people responded, and 94% of them replied back saying the reading accurately captured their deepest traits and inner struggles. The punchline? Gauquelin had sent every single person the exact same birth chart—and it belonged to Dr. Marcel Petiot, one of France's most notorious and prolific serial killers.






