Functional fit

Check each piece of the system on its own, against the job you gave it. Did that piece deliver the result it was supposed to, at good enough quality, fast enough, and dependably enough? Not the system overall. Each part, separately.

Check each piece of the system on its own, against the job you gave it. Did that piece deliver the result it was supposed to, at good enough quality, fast enough, and dependably enough? Not the system overall. Each part, separately.

Example

Score the family system piece by piece. The shared calendar: reliable, everyone sees the right dates. The chore chart: accurate but always two days stale. The automated reminders: fired 40 times last month and got swiped away unread, so they produced no completed chores at all.