Commit 6c2329

2026-05-25 10:26:17 lisa: SD C04: add Check Your Understanding to Efficiency vs Effectiveness; correct efficiency factors to VCAA's three Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

sd/C04/Efficiency vs Effectiveness.md ..
@@ 36,16 36,35 @@
	---
+	## Check Your Understanding
+
+	For each statement, decide: is it an **efficiency** criterion or an **effectiveness** criterion? Answer in your head first, then unfold.
+
+	1. "The report exports to PDF in under 3 seconds."
+	>| **Efficiency** — it's about speed of processing (resource use).
+
+	2. "A first-time user can find the search bar without instructions."
+	>| **Effectiveness** — usability; it's about fitness for the user's purpose.
+
+	3. "The app runs the duplicate-check without re-reading the whole database each time."
+	>| **Efficiency** — cost of data and file manipulation.
+
+	4. "Every field required by the SRS appears on the booking form."
+	>| **Effectiveness** — completeness against the requirements.
+
+	5. Version A loads in 0.3 s but only 30% of users can book unaided. Which factor is it *failing*?
+	>| **Effectiveness** — it's fast (efficient) but most users can't achieve their goal.
+
+	---
+
	## The evaluation matrix — where this matters
	In your evaluation matrix, each table uses separate factors:
-	**Efficiency factors** (measure resource use):
-	- Speed of Processing (time)
-	- Cost of Data Manipulation
-	- Functionality Implementation (effort/complexity)
-	- Hardware Requirements
-	- Bandwidth Usage (if applicable)
+	**Efficiency factors** (measure resource use) — VCAA names exactly three:
+	- Speed of processing
+	- Cost of data and file manipulation
+	- Functionality
	**Effectiveness factors** (measure fitness for purpose):
	- Usability, Accessibility, Clarity, Completeness, Accuracy, Relevance, Readability, Attractiveness, Maintainability, Timeliness, Communication of Message