It seems to be very random and chaotic and also a bit evil, and yet somehow lots of nice people work there, to some extent mitigating the evil with common sense. Possibly this is the best one can hope for from a very large organisation.

I am in awe of the devoted short-wearing persistence of our postman, even in the worst of weathers, and his ability to zoom up our steps, slam-dunk post on the doormat, and be back in his van before I've got to the end of the sentence 'Is that the post?'