The object (if you believe anything has a point or a purpose) is to switch up the routine, as the elevator lady's number reduces with each variation on your day. There is an 'end', or in video game terms a 'kill screen', when you complete the game.
"The review calls these climate change scenarios, "accelerant of instability" and suggests the military will have to plan on operations where climate (rising sea levels, reduced ice in the Arctic) would be a factor in planning. In addition to what climate change effects could bring in terms of the spread of disease, mass migration and a scarcity of resources."