When a board holds dozens of threads, a list cannot tell you where you are unsure and where you are only busy. The Certainty page puts each thread on one arc from “still figuring it out” to “pure execution”, so you see where the unknowns are before a deadline arrives. The Task map shows every open task by when it is due and how important it is, so you see what to do now, what to plan and what to drop.

Both sit together on one page and both work on the board you are on.

The full chapter, with every step and setting, is in the app: open your account menu and select User manual.