Thinking Lab · 4 lessons
Thinking Foundations
Notice how your own mind is working Most thinking mistakes are not caused by a lack of intelligence.
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Notice how your own mind is working
In one line: Catch your own thinking while it is still happening, instead of reconstructing it afterwards.
When you need it
- You have already decided and you are now collecting reasons.
- You are certain about something and cannot say where the certainty came from.
- A decision is coming that would cost more than a day to undo.
The common misreading
- What people think
- Thinking well means thinking slowly about everything.
- What is true instead
- Most of your thinking should stay fast. The skill is noticing the few moments that earn a second pass.
After this module you can split any judgement you make into what you saw and what you added.
The key idea
Most thinking mistakes are not caused by a lack of intelligence. They are caused by moving fast, mistaking an interpretation for an observation, and never checking which is which.
Start with a hard question
It can be about your work, your money, your health, or a person. Do not check it yet. Just find one and write down how you came to believe it.
What is something you are completely sure about, that you have never actually checked?
Answer it before reading the lessons — then again after, and notice what changed.
The lessons
- What thinking actually means — The fast answer arrives first and feels like a conclusion. Deciding whether it deserves a second pass is itself a thinking skill. (5 min)
- Observation, interpretation, fact, assumption — Separating what you saw from what you concluded is the single move that most improves everyday reasoning. (6 min)
- Why reasoning goes wrong, and what pressure does to it — You cannot debias yourself by knowing the biases. You can build a short checklist and use it when it counts. (6 min)
- Metacognition: thinking about your thinking — Writing your reasoning down is what makes it reviewable. Memory quietly improves your past reasoning for you. (5 min)
Practise it
Short exercises. Under each is what a considered answer tends to contain — not a mark scheme.
Split the sentence
"The new process is not working — the team hates it." Separate every observation from every interpretation in that sentence.
- Tends to contain: What could actually be seen or measured
- Tends to contain: Where a feeling was attributed to a group
- Tends to contain: What "not working" would have to mean to be checkable
Find the anchor
A seller opens at 90,000. You counter at 75,000 and settle at 82,000, pleased. What number shaped the whole exchange, and what is missing from your sense of a good outcome?
- Tends to contain: The opening number did the work
- Tends to contain: Nothing here established what the thing is worth
- Tends to contain: What independent reference would have helped
The pressure rehearsal
Name a decision you know is coming in the next month. Write the three things you will check before deciding — while you are calm and it costs you nothing.
- Tends to contain: Checks you can actually perform
- Tends to contain: At least one that could change your mind
- Tends to contain: Nothing that requires information you will never have
Reflect
Which of your everyday certainties turned out to be an assumption you had never examined, and how did noticing it feel?
Methods for this
- Retrieval instead of rereading — Practising getting information out, rather than putting it in again.
- Deliberate practice — Practice aimed at a specific weakness, with immediate feedback, just past what you can do.
- Design a learning path — Planning what to learn from how you intend to use it, backwards.
- Explain it plainly — Finding the holes in your understanding by explaining without jargon.