A Nomad (FWCS) moves with one kind of work, done well, from one very different world to the next, and so gets to know, from the inside, worlds that most people only see from outside.
The kind of work goes with the Nomad from post to post, whether hands-on work such as electrical work or a profession such as accounting. Where this page says trade or craft, it means any skilled kind of work, from wiring a house to auditing a bank. What a Nomad learns again at each move is the world around the work, the Nomad’s work environment, from how meetings run and who decides what to which licences count and what colleagues in that world call a job well done.
A management accountant who sets the costs and budgets at a family brewery, then at a medical charity working across East Africa, then on a defence ministry’s planning staff does the same costing and budgeting each time, and learns three different views of what money is for. Some Nomads change worlds without changing employer, as when a police force moves an analyst from its city headquarters to a rural station, and some cross a border without changing worlds, when the work abroad runs the way the work at home does.
Nomads hold the work to a solid standard that a new employer or client can rely on, and give their curiosity to each new world, its people, its language and its streets, and to a life outside work.
Every move also gives a Nomad a comparison. The same task done in two very different worlds shows which way of doing the task is quicker, safer or fairer, and a Nomad can bring the better way into the next world.