You tap Start Navigation and your phone starts erasing roads by the thousand. 🛰 ⏱️ The blue web is the search itself. A shortest path algorithm fans out from your location, scoring every intersection it reaches by how long that road takes right now instead of how far it is. Speed limits, turn restrictions, live traffic from other phones. The green line is whatever survives. Edsger Dijkstra worked the method out in 1956 in about twenty minutes, sitting at an Amsterdam café with no pen and no paper. Every navigation engine built since is a faster version of that same idea, and in 2024 mathematicians proved nothing can beat it. Google Maps alone routes over 600 million miles of driving every day. One coffee break in 1956. Every route since. Love Technology? Follow Wealth 🌟 #technology #googlemaps #algorithm #engineering #computerscience