Feast your brain on this Wikipedia article: https://en.wikipedia.org/wiki/List_of_multiple_discoveries https://en.wikipedia.org/wiki/List_of_multiple_discoverie

Feast your brain on this Wikipedia article: https://en.wikipedia.org/wiki/List_of_multiple_discoveries https://en.wikipedia.org/wiki/List_of_multiple_discoveries It is really amazing to see how many discoveries and inventions I've heard of were independently made by two or more people within a few years of each other.