For this pre-everything has a computer mechanic dabbler, cell phones were a real boon. Take a picture, remove a part, take another picture, remove another part, ad infinitum. Then follow the pictures to put it back together!
My first thought was the poor slobs must have been on an extended business trip, giving the same presentation over and over and noting the restaurant variations was the only thing saving them from a fatal dose of ennui.
If one blesses his neighbor with a loud voice early in the morning, it will be counted as a curse to him. Proverbs 27:14, CSB