Link

Study a relationship instead of the things it joins. Ask what passes between two parts, how one feeds the other, and where the handoff breaks. The pair becomes what you measure and change, not either part alone.

Study a relationship instead of the things it joins. Ask what passes between two parts, how one feeds the other, and where the handoff breaks. The pair becomes what you measure and change, not either part alone.

Example

For the afternoon slump, stop scoring sleep and caffeine separately. The unit becomes the loop between them: a 3pm coffee pushes sleep onset to 12:30am, which flattens the next day. You test that link by moving coffee to 11am.