For instance, people on my facebook newsfeed alerted me that I have been cutting cherry tomatoes wrong all of this time. The technique may look fancy, but in reality it would probably take me a lot less time just to cut them by hand, using a smaller knife and it is very unlikely I'd ever use this technique.
But recently I saw a video about Sir Francis Galton's theory on the most efficient way to cut a cake using scientific principles. Apparently this was a personal problem, as he and his niece shared a small cake every few days. It seems like a viable solution in a time before plastic wrap.
Galton is known as one of the fathers of race eugenics but is also responsible for a number of brilliant inventions such as the modern fingerprinting system. He was a half-cousin of Charles Darwin and inspired by his work. I doubt he had any idea that his cake theory would make such a stir 100 years after he published it.