Observing someone in a particular circumstance can lead to insights about a job to be done

1. Watching people in different circumstances who are trying to do a job and gaining insight about what job they really want to get done.
2. You can offer better ways to do it.
3. Observing fields, problems, customers, ideas, process, company, technology, services, business models and seeing a solution that can be applied (perhaps with some modification) in a different context.