= Last mile problem
The exact same problem appears over and over, e.g.:
* https://en.wikipedia.org/wiki/Last_mile_(transportation)[transportaion]: the last mile of the trip when everyone leaves the train and goes to their different respective offices is the most expensive
* https://en.wikipedia.org/wiki/Last_mile_(telecommunications)[telecommunications]: the last mile of wire linking local hubs to actual homes is the most expensive
* electrical grid: same as telecommunications
<Ciro Santilli> also identified knowledge version of this problem: <the missing link between basic and advanced>.