Thinking Technically · Lesson 0
Fix it once.
Understand why.
A clinic’s solar light has died. In the next ten minutes you will find out why, without guessing and without wasting a single part. Probably.
A pathway that gets used gets stronger. Think of it as a seam, sewn a little further every time you practise.
A learning product study by Sethu Nguna. Turn on Design notes at any point to see the objective, the learning principle, the evidence captured and the access decisions behind each screen.
Before anything else
A hunch, please.
No marks here. We only want to know where you are starting from.
The idea
Two ways to be right.
By analogy: it was the bulb last time, so it is the bulb. Quick, and correct until the day it isn’t.
From first principles: set aside what you were told and what you assume. Keep only what you can measure. Build from there.
- QQuestion the assumptionWhat am I taking for granted?
- TFind the physical truthWhat can I verify, right now?
- BBuild up from thereFrom the facts alone, what follows?
Exercise 1 · Q
Hunch, or fact?
Six things people said about the dead light. Slide each card to the side it belongs on, or use the arrow keys.
Exercise 2 · T, then B
The bench.
The same dead light, now in front of you. Tap any part to put the meter on it. Drag to turn the bench. The parts bin is open, though every part fitted without a reason goes on the bill.
Start anywhere. A good technician starts at the source.
- Nothing yet. So far, it is all opinion.
Exercise 3 · From memory
Without the bench.
Your evidence