Chapter 37 — Exercises

Three tiers. 🚪 threshold; 🔄 retrieval; 🪞 reflection.

⚠️ This chapter synthesizes thirty-six others. Tier 3 in particular asks you to check the synthesis against the chapters it summarizes — and §37.13 says that where the summary is more confident than the chapter, you should trust the chapter.

Tier 1 — Recall and Comprehension

R1. 🚪 ⚠️ State the threshold. Then state the SECOND half and explain why it is the half that changes anything.

R2. ⚠️ Reproduce the one-page answer from the hook, from memory. ⚠️ What was Theo's reaction, and why does the chapter say the reaction matters more than the list?

R3. ⚠️ Give §37.1's four reasons boring works. ⚠️ Which does the chapter call the deepest, and why?

R4. ⚠️ Describe §37.2's two independent routes. ⚠️ What does the convergence establish, and what does it NOT establish? ⚠️ Which route is the genuinely independent one, and why?

R5. ⚠️ From §37.2b, give three exciting claims that FAILED, three that were ABSORBED, and two that are UNRESOLVED.

R6. ⚠️ What do the ABSORBED claims have in common? ⚠️ State the rule §37.2b derives, and the two caveats it attaches.

R7. ⚠️ Give six rows of §37.3's plate with their confidence levels. ⚠️ What is deliberately absent from the table, and which chapter is the reason?

R8. ⚠️ List §37.4's optional items. ⚠️ Then list the six things that are NOT optional.

R9. ⚠️ Give §37.5's list of what genuinely differs between people, in order. ⚠️ What does NOT meaningfully differ?

R10. ⚠️ State §37.5's one-sentence honest personalization instruction.

R11. ⚠️ Give §37.6's six mechanisms by which the information system rewards novelty. ⚠️ State the heuristic that follows.

R12. ⚠️ Why does the chapter say Coach Brandt is responding to incentives correctly?

R13. ⚠️ Give §37.6b's four reasons refuted claims return. ⚠️ What are the two consequences?

R14. ⚠️ Give §37.7's six questions in order. ⚠️ Which one does §37.2b support historically?

R15. ⚠️ What is the self-diagnostic from Chapter 33 §33.3, and why is it in this chapter?

R16. ⚠️ Give four of §37.8's six things that would change the author's mind. ⚠️ And four that would NOT. ⚠️ Why is the asymmetry deliberate?

R17. ⚠️ Name the four places §37.9 says the book has most likely been overconfident.

R18. ⚠️ What does §37.9 expect to move in the next twenty years, and what does it NOT expect to reverse? ⚠️ Which of §37.1's four reasons is the justification?

R19. ⚠️ State §37.11's distinction. ⚠️ What is firm, and what is not? ⚠️ What are the two comfortable extremes and why is each attractive?

R20. ⚠️ What does §37.12 say to do on Monday, and what is the meta-instruction?

Tier 2 — Application

A1. 🔄 ⚠️ The six-question check, live. Find three current nutrition claims — news, social media, a product page.

a) ⚠️ How many failed at question 1? (Theo's ratio was 14 of 31.) b) ⚠️ Did any survive all six? c) ⚠️ If one did, is it already in §37.3's plate?

A2. ⚠️ Replaces or adjusts. Take five claims you have believed at some point.

a) ⚠️ Which replaced the boring answer, and which adjusted it? b) ⚠️ Check each against §37.2b's outcome column. c) ⚠️ Does the rule hold on your own sample?

A3. ⚠️ Write your own week. §37.3b.

a) ⚠️ Seven days, real food, food you can cook and afford. b) ⚠️ Check it row by row against §37.3. c) ⚠️ How many rows do you meet? d) ⚠️ Does it contain a named bad-night meal and at least two meals that exist only because you want to eat them?

A4. ⚠️ The optional audit. §37.4.

a) ⚠️ Which optional items are you currently doing? b) ⚠️ What do they cost you in money, time and attention? c) ⚠️ Which of the six non-optional items are you NOT doing? d) ⚠️ Compare the two lists. Most readers find the imbalance uncomfortable.

A5. ⚠️ Your §37.8. Write your own pre-specified criteria.

⚠️ "I would abandon this if: __" ⚠️ "I would NOT abandon it for: __"

a) ⚠️ Is your first list achievable in principle? If not, it is not a criterion. b) ⚠️ Is your second list symmetrical with the first?

A6. ⚠️ Pick your two. §37.12.

a) ⚠️ Which two, and from which row? b) ⚠️ Could you still be doing both at Christmas? c) ⚠️ What did you NOT pick that has a larger theoretical effect? ⚠️ Why is that the right call?

Tier 3 — Analysis and Synthesis

S1. 🚪 ⚠️ Interrogate the threshold. §37.1 says boring is the mechanism, not an apology.

a) ⚠️ Steelman the opposite: that "boring" is a rationalization for a field that has failed to produce anything. b) ⚠️ Which of §37.1's four reasons survives that steelman? c) ⚠️ Is the threshold falsifiable? ⚠️ §37.8 attempts to make it so. Assess whether it succeeds.

S2. ⚠️ The convergence, attacked. §37.2 admits the routes are only partly independent.

a) ⚠️ Construct the strongest case that all three routes share a hidden common assumption. b) ⚠️ The chapter says the environmental route is the genuinely separate one. Is that right? c) ⚠️ What evidence would establish genuine independence?

S3. ⚠️ The survivorship problem. §37.2b concedes the boring answer looks robust partly because it is what remained.

a) ⚠️ Is that concession fatal, or does convergence rescue it? b) ⚠️ Construct a field where "what survived is right" would be clearly false. c) ⚠️ What distinguishes nutrition from your example — or does nothing?

S4. ⚠️ Novelty as a negative signal. §37.6's heuristic.

a) ⚠️ Is it true, or is it an excuse for conservatism? b) ⚠️ Apply it to a finding that WAS new and turned out to be right. ⚠️ Find one in this book. c) ⚠️ How would you avoid using this heuristic to dismiss the next genuine advance?

S5. ⚠️ The synthesis problem. §37.13 says a synthesis chapter is the most dangerous kind, because preferences get laundered into "what the evidence says."

a) ⚠️ Pick three rows of §37.3 and check them against their source chapters. b) ⚠️ Is the summary more confident than the chapter anywhere? c) ⚠️ If so, what does that tell you — about this book, and about synthesis chapters generally?

S6. 🔄 ⚠️ Kelsey's exclusion. Case Study 2's fifth plate.

a) ⚠️ Is it coherent for a nutrition textbook to say nutrition should come last for some readers? b) ⚠️ What would this chapter have to look like to be safe for her? ⚠️ Is that chapter still useful to everyone else? c) ⚠️ Chapter 34 §34.7 predicted exactly this risk about this book. Did §37.10 handle it adequately?

🪞 Reflection

M1. 🚪 ⚠️ What did you feel when you read the hook's one-page answer? ⚠️ Disappointment, relief, or suspicion? ⚠️ §37.13 says disappointment is a reliable signal of truth in nutrition. Does that ring true for you, or does it sound like a convenient thing for an author to claim?

M2. ⚠️ Theo: "I read a whole book for that?" ⚠️ What did YOU want the book to tell you that it hasn't? Be specific — the answer is informative.

M3. ⚠️ §37.4's optional list. ⚠️ How many of those have you done, and for how long? ⚠️ What were you buying with the effort?

M4. ⚠️ §37.6 says you cannot sell a subscription to "eat more lentils." ⚠️ How much of what you believe about food came from someone with something to sell? Trace one belief back.

M5. 🔄 ⚠️ Theo acted on Chapter 11's advice only after it survived his own filter — eighteen months after reading it. ⚠️ What do you already know and not do? ⚠️ And what would have to happen for knowing to become doing? ⚠️ Chapter 38 is about that question, so answer it before you get there.