The Courier and the truck
The Courier and the truck; complement and substitute Although people say “this time is different”, there is something in common. In the ancient ancient times, if you needed a parcel moved across the country, you hired a body. The good courier had good strength to carry the parcels, strong legs, deep lungs, and a tolerance for going without (too much) rest. Those were the metrics. Speed was a property of the person, so you paid for the person who had the most of it....