I was helping a student today with some form validation. She wanted a clean user interface and great usability, and when an input type wasn't valid and/or when a field was left empty by the user, a red message and box should appear giving clear direction on how to fix the data. ✅ ❌
GW Leibniz invented the modern binary number system. 🔢 Today this methodology is necessary and fundamental – in a word: critical – to computing. ☀️ In 1703 it reflected the duality of existence. Fast forward to German engineer Konrad Zuse, the ENIAC, and John von Neumann’s architecture in the 1930s and 1940s and we can't live without it.