The person delivering dinner may experience the same street as a very different city.

The street you walk down as a pleasant place is, for the person delivering your dinner, a set of timings, entrances, difficult stairs, and unwelcoming doorways. Same geography, entirely different city, and the two versions rarely meet even in the moment of handover.

A small amount of attention costs you nothing here. Clear instructions, a working buzzer, a light on, a moment of ordinary courtesy at the door. And it is worth remembering that the convenience you are enjoying is being produced by someone whose experience of the same evening is nothing like yours.