Chapter 1 · The three brains
How YOLO thinks
An expert gives YOLO an idea. Turning that idea into something you can judge is split between three specialists, each with a single job and a clear boundary. Maths decides every number you are shown; the AI reads language, summarises and argues against a weak idea — it never calculates a figure you trade on, and it cannot overrule the risk limits you set.
Pick a brain. See where its authority stops.
Each of the three has one job, one question it answers, and a hard edge it cannot cross. Choose one and read what it is — and is not — allowed to decide.
Takes the expert's idea and builds options strategies whose worst case is known before you commit. You see the most you can lose in pounds, the payoff shape, and the break-even points — every one of those numbers computed, not estimated by a chatbot.
The question it answersGiven this idea, what defined-risk structure expresses it — and what is the very worst it can do to me?
The Quant Brain decides
- ComputedWhich legs and strikes make up the structure, and how many contracts.
- ComputedThe maximum loss, in pounds, before you commit a penny.
- ComputedThe break-even prices and the shape of the payoff curve.
- ComputedThe probability-of-profit estimate, from the option maths — not a hunch.
- Worded by AIThe plain-English sentence explaining why this structure suits the idea.
The Quant Brain may never decide
- Off limitsYour risk budget — it sizes to the limit you set, it cannot raise it.
- Off limitsWhether the trade is placed. That is your click, every time.
- Off limitsThe price your broker actually fills at.
Read the tags above: everything marked Computed is arithmetic you could check by hand. Everything marked Worded by AI is language about those numbers. That line never moves — the AI in The Quant Brain writes sentences, it does not produce a figure you trade on, and it cannot raise a limit you set.
Maths decides, AI explains. Every number you are shown — your maximum loss, the break-evens, the stake — is worked out by deterministic code. AI is used to read language, to summarise and to argue against a weak idea; it never calculates a number you trade on, and it cannot overrule the risk limits you set.