This is the final exam for Second-Order Thinking. It pulls together everything: the gap between the first effect and the world’s reaction to it, the “and then what?” chain that branches into a consequence tree, the engines that drive later orders — incentives, feedback loops, and substitution — the worked cases from rent control to antibiotics, and the discipline of knowing when to stop digging. Take your time and reason each question through; several look easy until you spot the sign-flip.
How this exam works
Read carefully — this exam is final. Each question appears one at a time. Once you submit an answer it is locked for good: there’s no going back, no retry, and no restart. Your score is hidden until the end, where you’ll see a pass/fail verdict. The pass mark is 70%. A few questions ask you to select all correct answers.
What is the cleanest definition of a second-order effect?
Select an answer to continue.
Course Recap
Big picture
Second-order thinking, in one picture
- Second-Order Thinking
- First vs. later orders
- Second-order = the world’s reaction to the first effect — watch for the sign-flip
- The and-then-what chain
- Keep asking “and then what?”; the chain branches into a consequence tree
- Incentives & feedback engines
- Perverse incentives, Goodhart’s Law, reinforcing vs. balancing loops, substitution
- The worked cases
- Rent control, sugar tax, the irreplaceable hire, antibiotics, the quarterly cut
- When to stop
- Uncertainty compounds; catch the flip, then stop — match depth to stakes
- First vs. later orders
Key takeaways
Second-order thinking is the habit of asking “and then what?” — because the first-order effect is never the end of the story; the world reacts, and that reaction is where the real outcome lives. Watch above all for the sign-flip, where a good immediate effect curdles (the widened highway, the cobra bounty, the quarterly cut). Learn the engines that drive later orders — perverse incentives and Goodhart’s Law, feedback loops that amplify or stabilise, and substitution that reroutes behaviour — and notice how each ties back to opportunity cost, since shifted incentives send resources to their next-best use. But don’t spiral: uncertainty compounds with depth (0.8 per link is a coin-flip by the third), so go deep enough to catch the flip, then stop, and match your depth to the stakes — shallow for cheap two-way doors, careful for the irreversible ones. Think one step past the obvious — but not ten.