Prompt & Question
Prompt: Create a concise, self-contained brief of It All Adds Up that highlights how Launay tells the story of mathematics through people and pivotal ideas.
Question: What is the book’s angle, what range of topics/eras does it span, and what are the key publication facts (publisher, year, pages, ISBN)?
Program (Driver)
A tiny “check” harness ensures every data-claim has at least one footnote in Citations.
// Pseudocode
const claims=[...document.querySelectorAll('[data-claim]')];
for (const c of claims) assert(c.querySelector('sup a[href^="#fn-"]'));
Proof = Reason Why + Check. “Reason Why” summarizes evidence; “Check” verifies structure.