Cognitive bias: the trap inside your head
Step 1 / 3·Why smart people still decide badly
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Learning objectives — after this module you will:
- Understand why the brain takes shortcuts and when they mislead
- Recognise the most common workplace biases
- Apply concrete countermeasures
Why smart people still decide badly
Understand the two systems of thinking.
The brain has two processing modes. SYSTEM 1 is fast, automatic, intuitive and experience-based — enormously useful for survival and everyday work. SYSTEM 2 is slow, effortful and analytical. Because System 2 costs energy, the brain defaults to System 1 whenever it can.
The problem: System 1's shortcuts produce SYSTEMATIC errors — errors that lean the same way and are predictable. These are cognitive biases. Intelligence doesn't make you immune; only awareness and process reduce them.
A practical principle
You don't need (and can't afford) System 2 for everything. Learn to notice when a DECISION IS IMPORTANT ENOUGH to switch to slow mode: hiring, choosing a supplier, investing, changing policy. For those, intuition alone isn't enough.
Key takeaway: System 1 is fast but systematically biased; important decisions require deliberately engaging System 2.