In my builing we have 2 lifts with one button that calls the closest one.<p>Noticed that when both of them are on the same floor, the left one will arrive.
I guess there is some chip that prioriteses the first in the list.<p>That would explain why left one already has more issues with doors.<p>So I decided to simulate its work and see how much more left one will be worn out over time.<p>In 100K simulated trips left one went 494535 floors vs 226344 of the right one.<p>Lifts are old, but AFAIK well maintained and planned for replacement.<p>Still prefer to use the right one, when possible.