Crazy things scientists used to believe

• Sperm is little homunculus
• Darwin wrote that emotional imbalance could cause fuzzy hair.
• Phrenology measure mental essences as bumps on the skull
• Infants prior to the 1980s where not anesthetized during major surgery, on belief that couldnt feel pain.
• Early plastics were designed to look like wood.
• Not long ago psychologists doubted the importance of the emotional bond between parents and children even among humans. Childcare experts warned that children who were hugged and kissed by their parents would grow up to be needy, egotistical and insecure adults
• Scholars once claimed agricultural revolution as a great leap forward for humanity. Fantasy! No evidence people became more intelligent. AR => harder lives for those who lived through it.
• Planes would never work (Lord Kelvin 600 days before Wright Bros)