The biggest problem I always have with elevators is not the algorithm, it's the people seemingly being unable to grasp the concept of pressing either the up or the down request button, depending on where they want to go. Almost always I find someone will press both, because "then the elevator comes faster". Completely ignoring the fact that they end up going the wrong way first half the time, and adding an unnecessary halt for everyone already in there. How hard can it be to understand?..
It doesn't; it just needs to know it was called. You make your selection once it arrives.
Look up the early history of elevators and you'll see a progression from fully manual in-car up/down controls (often with a dedicated human operator); various semi-automatic systems with minor improvements like automatic leveling and door control; and then operatorless systems that started with nondirectional calls:
It is reasonable if you either have low load say a residential building where lift is often idle. Or low number of floors where travel times in either case are short.
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Look up the early history of elevators and you'll see a progression from fully manual in-car up/down controls (often with a dedicated human operator); various semi-automatic systems with minor improvements like automatic leveling and door control; and then operatorless systems that started with nondirectional calls:
<a href="https://liftescalatorlibrary.org/paper_indexing/papers/00000073.pdf" rel="nofollow">https://liftescalatorlibrary.org/paper_indexing/papers/00000...
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