Interface integrity

Checks the seams, not the parts. At every handoff between a person, an app, or a step, ask whether the meaning, the current status, the source of a claim, the named owner, and the odd cases made it across intact, or quietly dropped.

Checks the seams, not the parts. At every handoff between a person, an app, or a step, ask whether the meaning, the current status, the source of a claim, the named owner, and the odd cases made it across intact, or quietly dropped.

Example

You trace one chore from chart to reminder to done. The app says "kitchen," which two kids read differently; a swiped reminder still shows complete; nobody owns a sick day. Three of five handoff items leak, so you add an owner field and a "skipped" status.