Déjà vu? I spent a good 30 minutes yesterday on blogposts about how google/uber calculates the shortest distance and found conflicting answers oscillating betwe

Déjà vu? I spent a good 30 minutes yesterday on blogposts about how google/uber calculates the shortest distance and found conflicting answers oscillating between Dijkstra's algorithm and [0]Contraction hierarchies(which I didn't understand much). [0] https://en.wikipedia.org/wiki/Contraction_hierarchies https://en.wikipedia.org/wiki/Contraction_hierarchies