Instructions written by someone who already knows

The leaflet that came with the water filter says installation takes ten minutes. Step four reads: connect the inlet to the supply. There is a small drawing of a hand doing it.

For the person who wrote it, that is a complete sentence. They have fitted hundreds. They know which pipe is the inlet, which one counts as the supply, and that you turn the water off first. To a family in an Ajman flat on a Saturday morning, step four is the start of an argument.

Nobody set out to write a bad leaflet. The writer simply cannot remember not knowing. Expertise erases its own beginning, so the steps that were once hard now feel too obvious to mention, and they quietly drop off the page.

The same trouble sits inside every recipe card, every sign in a hospital corridor, every set of directions to a house, every first lesson. The person who makes them is the person least able to see them freshly. Good intentions do not fix it. Being clever does not fix it either.

What helps is accepting that it is genuinely hard, and remembering that the reader did not arrive by the road you took. Then handing the leaflet to someone who has never seen the filter, saying nothing, and watching where they stop.

Every stop is a missing sentence. Write it in, and hand it to someone else.

The writer may know the filter. Only the reader knows whether the leaflet works.