### id261665400 eating liver improves night vision > **Models don’t have to be correct to be useful.** Many times, people had the wrong idea about why a technology worked, but that didn’t stop it from working. For thousands of years, no one knew where alcohol came from when brewing beer, but people brewed it anyways. Similarly, there is evidence the Egyptians knew that eating liver helped them see in the dark, but it would take many years to learn this was because livers are heavy in vitamin A. - [View Highlight](https://read.readwise.io/read/01fqpczwwjhbnkz4j3ng5zdysf) - [[Review How To Invent Everything by Alex Irpan#id261665400 eating liver improves night vision|View in Vault]]