An elevator which will not let you change your mind…
Imagine you have a meeting on the 6th floor… You select the number ‘six’ from the control panel outside the elevator. You go inside and suddenly realize that you forgot your mobile on the 2nd floor… The control panel is not available anymore… You can try speaking with the elevator, but this would probably not work. Your only possibility is to go to the 6th floor, exit the elevator, select number two from the control panel and wait for the next available lift… Outrageous!
