My wife always randomly hits the up or down button, then gets upset if I explain why she should only pick the one she really wants. She forgets the next time. I think some people never really understand how elevators work.
See also: the keep open / close doors button. I had one building administrator explain to me we should add a delay of 10 seconds to the "quickly shut door" button because otherwise she kept getting her arm hit by the door. When I asked why we would add a delay to the button that's meant to reduce delays (why not simply wait for the door to close on its own, then?), and whether we should fix the sensor that prevents doors from closing if there's an obstacle instead, she just kept staring blankly at me. I don't think she understood me at all.
Again, some people simply don't grasp how elevators work.
Primarily this fixes the bug in the interface which is allowing the user to input data that does not match their declared destination. However, a second benefit is that you can then obtain per-user destination information, which is useful in capacity planning and currently lost in shared direction-only button pressing. Finally, you could usefully use non-floor specifications, ie. 'Ladies underwear', 'ACME Co.', etc.
This reminds me of my partner, who always sets car air conditioning to 50F (the min) or heat to 90F (the max) because she thinks it makes it get cold or hot faster.
And of course a few minutes later we’re freezing or roasting. She sees the temps setting as controlling intensity of cold/hot rather than just, you know, the temperature you want.
"2.3 Non-directional collective
Non-directive collective control provides a single pushbutton at each landing. This pushbutton is pressed by passengers to register a landing call irrespective of the desired direction of travel. Thus, a lift travelling upwards, for example, and detecting a landing call in its path stops to answer the call, although it may happen that the person waiting at the landing wishes to go down. This type of control is only acceptable for short travel lifts."
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.
