No job that society actually depends on is unimportant — and the test the question itself proposes proves it. Ask of any job: what happens if it stops? The jobs people rank lowest turn out to be the ones whose absence is felt fastest.
| If this work stopped | How soon it would be felt | What would follow |
|---|---|---|
| Street cleaning and waste collection | Within days | Blocked drains, flies and rats, contaminated water, outbreaks of disease — which would then keep children out of school and workers off work |
| Farming | Within one season | Food shortage everywhere. Restaurants, grocery shops and vegetable vendors — the whole table on page 165 — would have nothing to sell |
| Doctors and nurses | Immediately | Treatable illnesses become fatal; the healthcare that builds human capital disappears |
| Electricity, water supply, transport | Within hours | Factories, hospitals, schools and shops all stop together — they are inputs to everything |
So what makes people think some jobs are more important? Usually pay and status, and those measure something different from importance. Pay mostly reflects scarcity — how long the training takes and how few people can do the work. A cardiac surgeon is paid far more than a sweeper because it takes fifteen years to make one surgeon and far fewer people can do it, not because a city could survive longer without sweepers. Confusing scarcity with importance is the mistake this box is asking you to notice.