Brainback
product · learn mode

A tutor that refuses to answer. On purpose.

Learn mode is the surface where every academic problem in Brainback lives. Attempt-gated, Socratic-only, output-guarded — the workflow is the entire product.

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Type a question. Watch it refuse.

Pre-canned demo of the tutor engine. Real Socratic replies matched to your topic — no answer, one guiding question.

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the four rules

Enforced server-side. Not by prompt alone.

Each rule is a line of code, not a paragraph in a system prompt. Prompts drift. Code doesn't.

01

Attempt first

The API rejects any tutor request with an attempt under 20 characters. There is no way around this. You cannot ask, and receive, until you have tried.

02

Socratic only

The system prompt forbids the final answer, the completed proof, and the fully worked solution. The output guard catches leaks the model didn't recover from.

03

One question

Tutor replies end with exactly one guiding question. Two would split attention. Three would be a lecture.

04

Confidence tagged

Every attempt asks for your confidence 1–5 before the tutor responds. That data feeds the weekly calibration score.

The workflow is the whole product. AI answer-machines optimize for the click that ends the session; Learn mode optimizes for the session that ends with learning. Those are not the same objective, and the difference shows up in the design.

The attempt-gate is the most user-facing rule. It’s also the one that gets the loudest complaints for the first three days and the loudest praise for the next three weeks. A cognitive load that felt like friction becomes a scaffold you count on.

What Learn mode is not

Learn mode is not a chat window with a “don’t give me the answer” system prompt. A system prompt is a stance; a stance drifts under pressure. Every rule in Learn mode is enforced by code that runs regardless of what the model was told.

It’s also not a homework helper in the copy-paste sense. It’s the tool you use when you want to actually understand what you’re doing. If you want a paragraph drafted for a topic you aren’t being graded on, Efficiency mode is the door to your right.

The first three days I hated it. The next three weeks it saved me.
beta user · CS undergrad

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