Where it usually starts
A delivery operation that has grown past one van usually tracks parcels in three places at once: the manifest printed at the depot, the drivers' memories and a spreadsheet that customer service updates when someone rings.
- A recipient calls at four o'clock asking where their parcel is.
- Customer service rings the driver, who is driving, so the answer is "probably on the van".
- The consignment was actually sorted to the wrong route at six that morning and is sitting in a cage in the depot; nobody knows until the driver returns at seven.