What is actually known, and how well it is known
Short notes with their sources attached and a grade on every claim — including the claims where the honest grade is low. If the evidence for something is thin, that is the note.
Published notes
- How to start thinking about a problem
Most of what feels like thinking is rehearsal. Five questions, in order, turn a heavy feeling into something with an answer — and the first one is the one people skip.
- Why training a game trains the game
Practising a task makes you better at that task. The evidence that it makes you better at anything else is, once the comparison group is chosen properly, close to nothing — and that is worth knowing before you spend six weeks on it.
- What the evidence says about creatine and thinking
The trials are small, short and mostly about muscle. What survives when you read only the cognitive ones is narrower than the internet suggests — and more interesting.
The catalogues are not published yet
The rest of this hub — the Fuel dossiers, the Library and the Mastery pathways — is agent-drafted and has not been through the owner's review pass. It is readable inside an account and is deliberately not published, indexed or linked here until it has been read.
What is planned for this hub
The list below is the commitment, not a menu: each line is a note that is planned and not yet written. None of them is linked, because a link is a promise that something is there. When one is published it moves up the page and gets a date.
Fuel — evidence cards
One card per compound, graded per outcome, per population and per preparation, with the strongest contradicting evidence filled in on every card — including the cards whose honest verdict is that the evidence does not support the claim.
- Lion's Mane — what the four human trials actually tested
- Caffeine — the one acute effect that is well established, and its cost to sleep
- L-theanine with caffeine — what “smooths” means and what it does not
- Omega-3 — the clearest published null in the set
- Vitamin D — correcting a deficiency is not the same claim as supplementing when replete
- Brain diet foundations — the part that comes before any supplement
Brain Logic — thinking modes
The Foundation track, then sixteen thinking modes across three families. Each mode page carries the same six parts: how it processes a problem, the questions it asks verbatim, the models it uses and where they fail, the mistakes it avoids, a worked example, and a decision you make before it tells you anything.
- Noticing that you are not thinking
- Facts, assumptions, feelings — sorting before deciding
- The Scientist — what would I expect to see if this were false?
- The Analyst — out of how many?
- The Systems Thinker — what is this feeding back into?
- When to stop thinking — reversible and irreversible decisions
Train — what each exercise trains
A page per exercise stating the task it trains, in the task's own terms, with the timing and scoring rules that make the number comparable to your own previous sessions and to nothing else.
- Adaptive difficulty — why the accuracy band is held near 70–85 %
- Own-baseline comparison — why there are no percentiles here
- Reduced-motion variants are a different exercise, and score separately
- What a validity flag means when your session gets one
The same standard applied to the product’s own scoring.
Measured, confirmed, inferred, withdrawn — and why the third matters.
Six questions, free, and it will tell you which of these to read first.