13. Thomas Edison didn’t invent the light bulb
Edison’s version of the light bulb was simply the design that became most popular. But at least two men, Humphrey Davy and Joseph Swan, could claim to have invented electric lights long before Edison’s concept took off. Indeed, they even filed a successful patent lawsuit against him. But their names, and those of the other men who contributed in some small way to Edison’s bulb, are lost to history.
12. Humans don’t just have five senses
Depending on your point of view, humans aren’t limited to just the five senses. Indeed, it could be argued that humans have far more. Take proprioception – or spatial awareness – for instance, or our sense of balance. Some people even say that each sense should be linked to a different “sensor,” meaning things like temperature and pain would split the basic five senses – like touch – even further.