What is a task?

A task is one piece of work with an owner and, usually, a date.

It lives in a workspace, which decides who can see it. It has one assignee — the person responsible — and can carry collaborators who are working on it too, and watchers who only want to know how it goes.

If a thought is not yet work, it does not need to be a task. Put it in To Dos and promote it later if it turns out to matter.