Compare alternatives without overstating causation
Compare options using usable output and repair effort.
Reviewed: 2026-10-03
Source-based teaching example · Fictional data
Narration: Microsoft Mark · locally synthesized

00:00:00.000 — What you will learn

Compare options using usable output and repair effort.

Visual description:
Compare options using usable output and repair effort.

00:00:06.250 — The idea

Test comparable tasks and record quality failures. Include the time needed to fix them. Unknown repair work prevents a complete savings claim.

Visual description:
Test comparable tasks and record quality failures. Include the time needed to fix them. Unknown repair work prevents a complete savings claim.

00:00:18.875 — One useful term

Paired tasks. Corresponding tasks used to compare methods under comparable conditions.

Visual description:
Corresponding tasks used to compare methods under comparable conditions.

00:00:27.833 — A worked example

Method A takes thirty minutes for three passing outputs. B initially looks faster, but one output needs six more minutes of repair. Corrected B effort is twenty-four minutes, with a recorded initial failure.

Visual description:
Method A takes thirty minutes for three passing outputs. B initially looks faster, but one output needs six more minutes of repair. Corrected B effort is twenty-four minutes, with a recorded initial failure.

00:00:44.625 — Your turn to think

Can you report usable-output savings while repair time is unknown? Pause and decide before continuing.

Visual description:
Can you report usable-output savings while repair time is unknown?
Pause the video if you need more time.

00:01:02.208 — Why this answer works

No. Keep the failure and missing effort visible. A small fixture does not establish unattended reliability.

Visual description:
No. Keep the failure and missing effort visible. A small fixture does not establish unattended reliability.

00:01:12.625 — Check 1

Include rework.

Visual description:
Include rework.

00:01:16.833 — Check 2

Preserve initial quality failures.

Visual description:
Preserve initial quality failures.

00:01:22.125 — Check 3

State configuration and comparison limits.

Visual description:
State configuration and comparison limits.

00:01:28.000 — Now try a different case

Open the lesson and try its different practice case. Use every check in the full task. Watching alone does not mark the lesson complete.

Visual description:
Open the lesson
Try the new case
Check and revise
The full task and its requirements are in the linked lesson.