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TIL that approximately 7.7% of men and 4.8% of women in the genral population have Narcissistic Personality Disorder: a mental illness characterized by grandiosity and a general lack of empathy.

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Z86jR TIL Stalin's wife, Nadezhda, often argued with him, partly due to her desire to pursue a career, when he wanted her to have a domestic role. She later shot herself in the heart. Her death was announced as appendicitis, and her children were not told the truth of her death until years later.
xMLD TIL the British army created a special force of “Facebook warriors,” skilled in psychological operations and use of social media to engage in unconventional warfare in the information age.
L5j0 TIL that In 2003, Gary Ridgway admitted he was the Green River Killer, having murdered 49 women in the Seattle area. Ridgway had passed a lie detector test in 1987, while another man - who turned out to be innocent - failed.
e0WnL TIL A fitness tracking app gave away the locations of secret US army bases. The company released 3 trillion GPS data points to help people find popular running routes in major cities, however it was detailed enough to give away sensitive information of users on active military service.
lPrV TIL Lack of social interaction might be just as bad for you as smoking or drinking.