Customers talk about delivery as though it were one thing, measured in days. It is several things bundled together, and the bundle varies by customer, product and occasion.
There is speed, the interval between order and receipt. There is reliability, the probability that the promised interval is met. There is precision, the width of the window within which the delivery is expected: "tomorrow" is a different promise from "tomorrow between ten and eleven", and "your driver is six stops away" is different again. There is convenience, which concerns where and how the item is received: at the door, with a neighbour, in a locker, at a shop counter, in a safe place, with or without a signature. There is price, sometimes explicit and often hidden in the price of the goods. There is transparency, meaning the quality of the information the recipient receives along the way. And there is trust: the expectation that the parcel will not be damaged, stolen, left in the rain, falsely marked as delivered or simply lost, and that if something goes wrong there will be someone to tell who can do something about it.
These dimensions trade against each other, and the trades are not obvious. Speed and reliability conflict, because a network operating at the limit of its speed has no slack to absorb disruption; the fastest promise a carrier can make is rarely the one it can keep most consistently. Precision and cost conflict, because narrow windows constrain the sequence of stops and reduce the number of deliveries a driver can make. Convenience and cost can either conflict or reinforce one another, depending on whether the convenient option is a doorstep at an hour of the customer's choosing (expensive) or a locker at the end of the street that the customer visits when it suits them (cheap). Transparency, which costs relatively little once the scanning infrastructure exists, turns out to matter disproportionately to recipients, for reasons that have more to do with the psychology of waiting than with the parcel. And trust, which is the dimension most easily damaged and slowest to rebuild, depends on aspects of the operation that the customer never sees: how drivers are paid, how claims are handled, how many people are allowed to touch a parcel between one scan and the next.
The relevant fact for anyone designing a delivery service is that customers value these dimensions very differently from one another, and that most of them cannot articulate the weights they place on each until something goes wrong. A busy professional who works from an office may care about a parcel arriving at a locker by the evening and not at all about whether it arrives tomorrow or the day after. A pensioner who rarely leaves home may care intensely about a delivery being taken to the door and handed over in person. A small business waiting for a component may care about nothing except whether the promised day is met, because a missed day stops a machine. A family ordering groceries cares about the window more than the day, because someone must be in to receive chilled food. To treat all of these as variants of a single desire for speed is to misunderstand the market, and a good deal of the industry's strategic error can be traced to exactly that misunderstanding.
from Delivering the Future: The Companies, Technologies and Decisions Reshaping Delivery (2026)
