The setup / overhead is for the initial render, but after that I'd be surprised if O(N) defeats O(1) even with a bit of a bigger constant (given a sufficiently

The setup / overhead is for the initial render, but after that I'd be surprised if O(N) defeats O(1) even with a bit of a bigger constant (given a sufficiently large N). Also, given React Fiber, I doubt that those 1000 calls will simply be function calls - I'd expect plenty of overhead on that end too. Would be interesting to design a realistic benchmark around this. IIRC Michel Weststrate (the author of MobX) had a realistic example based on draggable elements on diagrams, where the diagram link lines needed to be recomputed in realtime as you drag the boxes around. Another realisitc option would be large dashboards made of tables where lots of data updates come in real time.