To be fair, most of popular and important algorithms and tools in our daily lives are likely even older than that. Arithmetic takes you a very long way. RSA is

To be fair, most of popular and important algorithms and tools in our daily lives are likely even older than that. Arithmetic takes you a very long way. RSA is quite mathematically sophisticated (and recent) next to most of the algorithms we use. Also, look around your kitchen and you'll see a lot of tools that haven't changed much in millenia.