Life Skills, Episode 1: Other people. A 7-minute plain-language lesson. It opens a series that ranks which areas of adult learning most improve health, longevity and happiness, by size of effect, strength of evidence and teachability. Social connection ranks first. Holt-Lunstad 2010 (148 studies, 308,849 people): odds ratio 1.50 for survival. Isolation 1.29 and loneliness 1.26 (2015). Harvard Study of Adult Development: relationship satisfaction at 50 predicted health at 80. Loneliness is shown as a too-sensitive smoke alarm, and the best programs target that loop (effect sizes ~0.2 overall, ~0.4 CBT-style). Three skills: correct the forecast (liking gap; Chicago commuters), budget the hours (Hall 2018: ~50/90/200 hours to casual friend/friend/close friend), and small contacts count. Do this week: one recurring weekly thing with the same people, as an if-then plan, for 8 weeks.