There are 8 kinds of human knowledge.
8 shows you which ones you and the AI are using — and which you may not be reaching.
Then it runs a learning loop that turns each reading into a sharper interaction, and in time, work you can inspect before you trust.
The empty rows are not missing data. They are potential insights.
These are not categories we invented. They are grounded in how the brain organizes knowledge, distinguishable processes and networks, most of which never surface in conversation.
Your brain offers up What and How first because they are the easiest to put into words. Other kinds of knowledge — systemic Why, context-dependent When, embodied Body, episodic Story — are structurally harder to reach without a prompt. 8 acts as the bridge.
Not a personality type. Not a label. A live picture of which kinds of knowledge you and AI actually use, right now, in a conversation you are already having.
The eight knowledge types are the diagnosis: they show what's present, what's missing, what you over-rely on, and what you're only assuming. The loop is what you do with it — you scope the task around the gap, brief the model to cover it, and check whether the output earned its conclusions. Seeing and doing, on one substrate.
Five commands take a rough intention to a result you can check before you rely on it — scope, assess, brief, review, and adjust. New in v0.6, brief drafts a usable prompt in the same turn and labels the judgment points: Assumption (what 8 inferred), Required from user (facts only you can supply), and Human-only evidence (first-hand input the model shouldn't fake). You get a working prompt fast, and an honest list of what to check. The point isn't to remove your judgment — it's to make the draft inspectable enough for judgment to happen.
When praise escalates and nothing new gets checked, the work feels finished before it has been tested. 8 flags agreement that outpaces evidence and asks for the counterexample before you adopt it. Related: agreement and evidence →
Paste the prompt into your AI assistant (Claude, Gemini, ChatGPT) and start talking. The 8 Knowledge Types light up as you speak.
As you talk, 8 tracks two signals quietly. Friction (ƒ) tells you when the conversation is grinding — or gliding, with agreement outpacing evidence. Both are failure modes; 8 watches for each. Direction (Δ) tells you whether you are moving toward knowledge that is harder to reach or easier.
After a few minutes, type scan to see where you have been. Type trace to see the shape of the whole conversation. Type challenge any time the flow feels too smooth: the AI must produce the strongest counterexample to whatever was just agreed and rule honestly — breaks, holds, or needs evidence. The commands are simple. The patterns are yours.
When you're done, type save and the session becomes a durable record. Type synthesize [artifact] and the conversation becomes whatever you need: a summary, an email, a plan. Type focus [type] any time to move the conversation into a type you want to explore — like Body, Why, or Story.
Surprise — You discover you have been thinking with only 3 of 8 kinds of knowledge. Every conversation. For years.
Curiosity — What would happen if you went to the knowledge types you rarely visit? What is there?
Relief — The stuck feeling has a location. Nothing is wrong with your thinking. You just haven't gone there yet.
Agency — You can see the pattern now. Seeing it is what changes it.
$96
The complete instrument: see your thinking through the eight knowledge types, and run the loop — scope, assess, brief, review, and adjust. Prompt, tutorial, reference sheet, neural basis paper, and 8 View. One purchase, unlimited use.