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DEEP MASTERY

Build understanding that transfers.

Short lessons. Deliberate practice. Evidence you can come back to.

Skill map
Recommended next: Know where the work happensBased on your goal, experience, and completed lessons. You can choose any level.
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NINE PRACTICAL LESSONS

Better task judgment

Practice context selection, safe recovery, instruction pruning, skill design and evidence-based workflow decisions.

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01
LEVEL 1 · NO PREREQUISITES

Foundations & setup

2 lessons

Know where the work happens

Choose an environment that can access the right evidence.

6 minChallenge out

Recognize a verified result

Separate a plausible answer from observable completion.

6 minChallenge out
02
LEVEL 2 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Effective task briefs

2 lessons

Turn a request into a task

Write a bounded brief that leaves room for implementation judgment.

6 minChallenge out

Make acceptance criteria observable

Translate intent into examples and boundaries.

6 minChallenge out
03
LEVEL 3 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Context & sessions

2 lessons

Inspect with a purpose

Find the smallest useful context before editing.

9 minChallenge out

Leave a recoverable handoff

Preserve decisions and evidence across sessions.

9 minChallenge out
04
LEVEL 4 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Repository instructions

1 lesson

Write instructions grounded in facts

Create concise instructions that reflect the repository.

9 minChallenge out
05
LEVEL 5 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Controlled implementation

2 lessons

Plan in proportion to risk

Choose the smallest justified implementation plan.

9 minChallenge out

Review before accepting

Connect a diff to the authorized task.

9 minChallenge out
06
LEVEL 6 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Debugging & root cause

2 lessons

Reproduce before fixing

Create a discriminating failure case.

9 minChallenge out

Test a hypothesis

Use evidence to distinguish causes.

9 minChallenge out
07
LEVEL 7 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Testing & refactoring

2 lessons

A green test can be a false signal

Detect tests that no longer check the intended behavior.

9 minChallenge out

Preserve behavior while refactoring

Name and verify invariants before changing structure.

9 minChallenge out
08
LEVEL 8 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Reusable workflows

1 lesson

Make a workflow reusable

Turn a successful attempt into a bounded recipe.

9 minChallenge out
09
LEVEL 9 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Permissions & automation

1 lesson

Separate permission from intention

Choose the narrowest access needed for an action.

9 minChallenge out
10
LEVEL 10 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

MCP & integrations

1 lesson

Treat tool output as evidence

Recognize instructions embedded in external content.

9 minChallenge out
11
LEVEL 11 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Parallel work & Git

1 lesson

Delegate independent work

Separate investigation, implementation, and integration ownership.

9 minChallenge out
12
LEVEL 12 · BUILD ON EARLIER FOUNDATIONS OR CHALLENGE OUT

Productivity & capstones

1 lesson

Ship an evidence package

Complete a workflow and explain its limits.

9 minChallenge out