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Jan
29
comment Why do idle elevators close the doors?
The point 5 is not valid. If a user thinks that an unlit lift is broken, it is a user problem. Some people think that because lifts do close their doors. If lifts work differently, people think differently. For instance, lifts with a manual outer door typically have a window on the outer door, leave their inner door open and turn their light off after a while. People take them anyway. People coming in an unlit flat don't think the flat is broken.
Jan
29
comment Why do idle elevators close the doors?
@Tsasken - I like your remark ! People must always take velociraptors into account when designing things.
Jan
29
comment Why do idle elevators close the doors?
@GWv - With a lift keeping its doors open, if you were the anxious type, you could always begin with pushing the button. Thus, you would be sure that the lift would not close on you.
Jan
29
comment Why do idle elevators close the doors?
Regarding the point 4 : Closing the doors can be a false good idea. If the doors stay open, the cat or child can come in, but then s/he can go out, especially when the light goes off. Now, if the doors close, the cat or child has a smaller risk of going in, but s/he can go in anyway, and then s/he has a big risk of being trapped inside and ending up later at another floor.
Jan
29
comment Why do idle elevators close the doors?
The point 4 can be a good reason for cats and children. On the other hand, requiring the person to push the button can be an annoyance. When the person is old, or has many packs, or is moving furniture...
Jan
29
comment Why do idle elevators close the doors?
About the point 2 : A lift that closes its doors can also have someone walking in at the time of closing. And the person often walks in without pushing the button, so the lift does not know that someone wants to come in. A person coming in while the lift is closing is a common situation that lifts usually are able to handle.
Jan
29
comment Why do idle elevators close the doors?
@Alexander - I have never seen a lift asking for the wanted floor at calling time. But often there are two calling buttons, one for going up and one for going down.
Jan
29
comment Why do idle elevators close the doors?
@theotherone - (x-1)/x
Jan
29
comment Why do idle elevators close the doors?
@Eric - Is this a joke ?! Where do such lifts exist ? In order to avoid "working" on sabbat day, this would spend much more work - in the sense of physics. With a huge waste of energy, for a much less efficient system.
Jan
29
comment Why do idle elevators close the doors?
This case is interesting. But it can be solved with a presence detector - which would probably be used anyway for the light.
Jan
29
comment Why do idle elevators close the doors?
For the cases 3), 4) and 5), both behaviours are equivalent. The delay is just transferred from one passenger to the other passenger.
Jan
29
comment Why do idle elevators close the doors?
Actually, in the fire alarm case, the lift being closed adds danger. Someone can be trapped inside !
Jan
29
comment Why do idle elevators close the doors?
The fire alarm case does not stand up. The lift is closed. People want to take the lift but it is disabled. Now, if the lift is open, people want to take the lift but it is disabled. The situation is the same.
Jan
29
comment Why do idle elevators close the doors?
Indeed, this is a very good question. Interestingly, the lifts with a manual outer door leave their inner door open when idle. The manual outer door typically has a window. The automatic lifts in the Paris métro and RER keep their doors open when waiting. These both cases offer the advantage of seeing whether the lift is there.
Jan
29
comment Why do idle elevators close the doors?
@Florian - In home buildings, it is the contrary. In the morning most people go down. And in the evening most people go up.
Jan
15
awarded  Nice Answer
Jan
9
comment Save buttons that don't save
Making a message clearer is good for user experience. Making a message clearer but wrong is bad for user experience.
Jan
9
comment Save buttons that don't save
I do not understand your last sentence. What message are you talking about ?
Jan
9
comment Save buttons that don't save
Doing the third option while keeping auto-saving would be a bad idea. It would strongly suggest that changes are not saved until you click Save. While in fact they would be saved.
Jan
9
comment What is a “toast notification”?
@rlsaj - This is not modal at all.