>Surely, someone would have eventually invented the stirrup, given ridable horses. The key word is eventually. The number of inventions that are blindingly obv

>Surely, someone would have eventually invented the stirrup, given ridable horses. The key word is eventually. The number of inventions that are blindingly obvious yet took millennia to appear boggles the mind. A nice example is swimming, where various strokes appeared incredibly late in otherwise "advanced" cultures and only in imitation of other "primitive" cultures. E.g. https://en.wikipedia.org/wiki/Front_crawl https://en.wikipedia.org/wiki/Front_crawl