The public facility I hate most recently is the elevator in Tisch.
It’s a big trouble especially during rush time. We can hardly tell if the up and down buttons are pressed or not, and we never know whether or not the floors we need has been selected.
Sometimes it doesn’t go up untile it arrives the lowest floor, and vice versa. But the elevator lights are not capable to transmit such information, so it may waste large amount of time for us to get to the right floor.
The limitation of its storage and speed also cause inconveniences.