squarks

Instead of personal attention, what if there were a kiosk in every (or many) airports, like a RedBox, where you could get your tickets, SIM card, or whatever predictably before arriving? Or perhaps even a locker where someone gets all your things and puts them in the locker for you for when you arrive? That might keep the costs down.

Yes I do mean design in general. The book titled "The Design of Everyday Things" is pretty good IMO, but probably would only interest an older child. Maybe some of the work is to just point out that creating things people use requires making decisions and that whole process is "design."