"Essential Knowledge: 17 Basic Facts Everyone Should Master"

Redditors shared important pieces of basic knowledge that many people are unaware of, including not mixing bleach and ammonia, the dangers of cat bites, the importance of not giving water to babies under six months, and the fact that England and the UK are not the same thing. Other tips included using salt to clean blood stains, leaving a fire in the oven to burn out, regularly cleaning dryer vents and furnace filters, and understanding how different antibiotics work for specific infections.