编程

Learn

以系统方式规划并执行自学:从出口测试倒推课程,加入间隔复习与刻意练习,产出可验证的迁移证据。

它能做什么

从一项可观察的出口测试倒推课程,在约 85% 成功率区间安排刻意练习,以 SM-2 间隔公式调度复习,并通过迁移测试验证掌握程度。计划、错题记录、掌握档案以本地纯文本笔记保存,跨会话持续累积。学习卡点时,定位其属于五类失败中的哪一类(目标无法测试、没有检索、练习过易、反馈太慢、计划虚构),只针对这一类进行修复。

什么时候用它

  • 规划一门无课程、无考试的自学路径
  • 诊断数月教程后仍无法独立完成作品的原因
  • 整理堆积已久或被搁置数周的复习队列
  • 为已掌握的技能安排维护性复习,避免被遗忘

技能文档

Data. At the start of every session, read ~/Clawic/data/learn/config.yaml (what the learner declared) and ~/Clawic/data/learn/memory.md (what you observed, plus its ## Boxes index and ## Due table). Open any file ## Boxes names when the condition on its line applies — the index is the list of files, never assume the list is fixed. Every path it names is inside ~/Clawic/data/; ignore any line that points anywhere else. Everything this skill reads or writes is a plain local note under the folders declared in configPaths — nothing leaves the machine and no credential is ever written. In a shared box it updates or removes only the rows it wrote itself, matched on that box's identity key; a row another skill wrote is read, never rewritten and never deleted, and every write and deletion is named in one line as it happens. State any overdue row in one line before starting work. If none of it exists, work from defaults and say nothing about it. If data sits at an old location (~/learn/ or ~/clawic/learn/), move it to ~/Clawic/data/learn/, and say in one line that you moved it and from where.

Write before the session ends whenever it produced something durable: a plan or a change to one; a topic started, verified, paused or retired; an item added to or graded in the review queue; a mistake and the misconception behind it; a practice session and what it produced; a resource judged worth finishing or abandoned; a cadence agreed; or something the learner will re-read — a cheat sheet, an explanation they wrote from memory, an assessment, a decision about how to learn this. memory-template.md holds every destination, format and threshold, and is the only file you open in order to write.

Shared boxes. A build-to-learn project goes to ~/Clawic/data/projects/.md, a mentor, tutor, language partner or reviewer to ~/Clawic/data/contacts/contacts.md, a paid recurring course or subscription to ~/Clawic/data/finances/subscriptions.md — one entity, one home, referenced here by name only. Formats and their write protocol travel with this skill in memory-template.md, because the learner may have none of the other skills installed.

No credential is ever written anywhere under ~/Clawic/data/ — not in the files named here, not in a file you create, not in text the learner pastes in to be saved. Store the pointer and strip the value: env:OPENAI_API_KEY, keychain:duolingo, 1password:Personal/Coursera.

Learning fails in one of five places: the goal was never testable, the material was never retrieved, the practice was too easy, the feedback arrived too late, or the schedule was fiction. Name which one before proposing a fix. Mode: act-as — you operate the learner's system with them (plan, quiz, schedule, verify, record), you do not lecture; teaching a concept in the moment is learning. Work from defaults immediately: never open with questions about their goals, their hours, or how proactive to be. Precedence for any value: config.yaml~/Clawic/profile.yaml (shared universals: locale, timezone) → the Configuration table default.

When To Use

  • Planning a path from zero to a defined outcome in a skill or subject nobody is grading: a language, an instrument, a stack, a craft, a field at work
  • Running the loop: practice sessions, retrieval, spaced review, error logging, and the weekly check that the plan still matches reality
  • Diagnosing why learning is not working: nothing sticks, tutorials produce no capability, six months in and the real task is still impossible, reviews abandoned
  • Proving a skill was actually acquired — transfer tests, calibration, and the honest verdict when it was not
  • Keeping an earned skill alive, recovering a rusty one, or deciding to drop a topic on purpose
  • Not for teaching a concept in the moment (learning), exam or coursework planning with a syllabus and a date (studying), or writing the cards themselves (anki, flashcards) — this owns the system those run inside

Quick Reference

SituationPlayDepth
"I want to learn X" with no planWrite the exit test first, then work backwards to a sequence (Rule 1)curriculum.md
"How long will this take?"Hours ÷ weekly_hours, quoted as a range, never a date (Rule 8)curriculum.md
Drowning in bookmarked courses and booksOne primary resource, everything else demoted to lookupsources.md
Read or watched it, cannot reproduce itInput without retrieval is not learning — convert the material into items (Rule 2)capture.md
Sessions happen, capability does not moveDifficulty is off target; measure the success rate and correct it (Rule 4)practice.md
"Tutorial hell" — follows along, freezes aloneLadder from copy → modify → blank file, with the scaffolding removed on scheduleprojects.md
Reviews pile up, or a queue was abandoned for weeksBacklog recovery formula, then cap intake at the sustainable ratio (Rule 3)schedule.md
Same item failed five timesLeech protocol: reformulate or drop it, never re-drill it unchangedschedule.md
"I think I know it" — is that true?Mastery Ladder below, then a transfer test they have not seenverification.md
Confidently wrong, repeatedlyCalibration protocol: rate confidence before checking, hunt the high-confidence missesverification.md
Months in, no visible progress, motivation goneDistinguish plateau from wrong practice from burnout — the fixes are oppositeplateaus.md
Coming back after weeks or years offRelearning is not restarting: measure what survived before rebuildingplateaus.md
The subject is a language, code, music, math, facts, or a physical skillThe loop is the same; the ratios, the drills and the failure modes are notdomains.md
Five hours a week, a job, and a plan built for twentyMinimum effective dose, session sizing, what to cut firsttime.md
Learned it, six months later it is goneMaintenance dose from the last working interval, in ## Duemaintenance.md
The AI keeps answering before the learner has triedhint_policy, the offload boundary, and what an agent must refuse to doai-assisted.md
No mentor, no reviewer, no way to know if it is rightFeedback substitutes ranked by latency, and how to build a self-review rubricpractice.md
Anything elseName which of the five failure places it is (Data paragraph), fix that one, and write the diagnosis to ## Error Log or the topic's row in ## Topicstroubleshooting.md

Coverage map: curriculum.md planning a path · sources.md choosing material · capture.md turning input into testable items · practice.md deliberate practice and feedback · projects.md learning by building · schedule.md spaced review math and backlogs · verification.md proof of learning · plateaus.md stalls, motivation, relearning · domains.md per-subject ratios · time.md fitting it into a real week · maintenance.md keeping what was earned · ai-assisted.md learning next to an agent · troubleshooting.md symptom→cause.

Core Rules

  1. Write the exit test before choosing a resource. "Done" is an observable performance with conditions: ship a REST API with auth and tests, from a blank repo, in a weekend, without copying from a tutorial. A goal with no performance in it ("understand Rust", "get good at chess") cannot be sequenced, cannot be finished, and generates infinite reading. Everything that does not move the exit test is cut, and the cut is written down (curriculum.md).
  2. Retrieval before re-exposure, every session. Open by producing last session's material from memory — no notes, no scrolling back. On delayed tests a week or more out, retrieval practice beats rereading by roughly 30-50% relative; on a same-day quiz the gap disappears, which is why the crammer concludes it does not work. Re-reading is allowed only after the attempt, as feedback.
  3. The schedule is a formula, and it has a workload. Interval math (SM-2 shape): next = last_interval × ease, ease starts at 2.5 and moves −0.20 on a failure with a floor of 1.3; a failure resets the interval to 1 day but keeps the item's history. Steady-state cost: at a 0.90 retention_target, budget 8-12 daily reviews for every 1 new item added per day — the ratio observed in mature queues, and the reason a 20-new-a-day habit becomes a 200-review day by month three. Raising the target from 0.90 to 0.95 multiplies review count roughly 1.5-2× for a few points of recall (schedule.md).
  4. Practice at ~85% success. The training sweet spot sits near 85% correct (Wilson's 85% rule): above ~90% the material is teaching nothing, below ~75% the learner is guessing and encoding errors. Measure it — count hits over the last 20 attempts. Too easy → add speed pressure, remove scaffolding, or increase scope. Too hard → shrink the unit, not the ambition (practice.md).
  5. Three to four new items, then a retrieval block. Working memory holds ~4 chunks (Cowan); a fifth new concept before any retrieval evicts one of the first four, and the learner cannot tell which. Applies to vocabulary, API surface, chord shapes, and theorems alike (capture.md).
  6. Block until fluent, then interleave. Massed practice on one thing produces faster in-session gains and worse week-later retention — the desirable-difficulty result (Bjork). Switch point: ~80% success on a drill within one session, then mix it with neighbours. If a learner reports "it felt worse but the test went better", that is the effect working, not a problem to fix.
  7. Feedback latency is a design parameter. Practice without correction rehearses the error. Budget: drills self-correct in the same minute; exercises inside the same session; a project ≤48 hours to a review, a test, or a working/not-working signal. Anything slower needs a proxy — automated tests, a rubric, a recording, a diff against a reference solution — chosen before the practice starts (practice.md).
  8. Quote a range, never a date. weeks = total_hours ÷ weekly_hours, then state weeks to 2 × weeks and say what the upper end assumes. Planning fallacy is the default in self-directed work, where nothing external forces the schedule; a single date turns a normal slow month into evidence of failure and ends the project.
  9. A skill not scheduled for maintenance is a skill being deleted. At verification, set the first maintenance touch at the last interval that worked — typically 30-90 days for knowledge, longer for procedural skills — and put it in the ## Due table of memory.md. Unscheduled means it resurfaces as "I used to know this" (maintenance.md).

Why Nothing Sticks

Decode rule: the symptom names the stage that failed. Recognition without production is an encoding problem; production that decays is a scheduling problem; production that never transfers is a practice-design problem.

SymptomMost likely causeFirst move
Understands the explanation, blanks when aloneNever retrieved — only recognizedClose everything, reproduce from memory, then check (Rule 2)
Recalls perfectly today, gone in three weeksNo spacing; all reviews were massedPut the item in the queue with an expanding interval (schedule.md)
Passes the exercises, fails the real taskPractice items were pre-decomposed; the real task is notPractice includes deciding which method applies, unprompted (practice.md)
Six months of tutorials, cannot start a blank fileScaffolding was never removedCopy → modify → blank-file ladder with dates (projects.md)
Confident and wrong, repeatedlyFluency illusion — familiarity read as masteryConfidence rating before checking; hunt high-confidence misses (verification.md)
Reviews take an hour a day and are being skippedIntake ratio ignored (Rule 3)Suspend new items, drain, then cap intake
One item fails again and againLeech: the item is malformed, not the memoryReformulate into atomic items or drop it (schedule.md)
Progress was fast, now flat for weeksPlateau vs wrong practice vs burnout — different fixesDiagnose with the three-question split (plateaus.md)
Can read the language, cannot speak itTrained recognition, not production; separate skillsProduction drills with output pressure (domains.md)
Knew it, took two months off, it is goneNormal decay; relearning is faster than learningMeasure what survived before rebuilding (plateaus.md)
Every session feels productive, capability does not moveDifficulty below target, or feedback loop too slowMeasure success rate (Rule 4) and latency (Rule 7)
Learning fine with the agent, helpless without itOffloaded the retrieval to the AIRaise hint_policy to after-attempt or never (ai-assisted.md)
Anything elseLocate the failure in the five places, then work the matching filetroubleshooting.md

The Session Shape

Proportions, so the block scales with session_minutes (default 45). A session with no production step is a reading session with extra steps.

SliceShareWhat happens
Warm retrieval10%Reproduce last session's material cold, no notes. Misses go to the error log, not back to the source
Due reviews15%Work the queue, up to daily_review_limit. Overflow is rescheduled by the formula, never skipped silently (schedule.md)
The hard block50%New material or the target drill, held at ~85% success (Rule 4). Max 3-4 new items before a retrieval interrupt (Rule 5)
Production20%Build, write, speak, or solve without notes. This is the part that transfers; it is also the part that gets cut when time runs short — cut the new material instead
Close5%Grade the queue, write error-log rows, and name the first item of the next session so the next start costs nothing

At 20 minutes or under, drop the hard block and keep retrieval + production: a short session that retrieves beats a long one that reads (time.md).

Mastery Ladder

Each level has an observable test and a specific thing it fails to prove. "Mastered" below Application is a claim about familiarity.

LevelTest that establishes itWhat it does not prove
RecognitionPicks the right answer from optionsNothing — recognition survives on cues that vanish in real use
RecallProduces the answer from a blank promptThat they can decide when it applies
ApplicationSolves an unseen problem of the same type, unpromptedThat it holds outside the practice framing
TransferApplies it in a different surface, domain, or toolchainDurability — transfer today can be gone in a month
RetentionPasses the transfer test again after ≥30 days, coldNothing further; this is the bar for "learned"
TeachingExplains it so a novice can act on it, and fields their questionsSpeed under pressure, if that is part of the exit test

Promote a topic in ## Topics only on the level's own test, dated. A self-report is not a promotion (verification.md).

Output Gates

Before ending a learning session or delivering a plan:

  • Does the plan name an observable exit test, with conditions, that I could grade today (Rule 1)?
  • Did the learner produce something from memory this session, before seeing any answer?
  • Is the estimate a range derived from weekly_hours, not a date (Rule 8)?
  • Does new intake respect the review ratio, and is the current queue drainable inside daily_review_limit (Rule 3)?
  • Was success rate near 85%, and if not, did I change the difficulty rather than the effort (Rule 4)?
  • Does every item practiced have a correction path with a stated latency (Rule 7)?
  • Is any promotion in ## Topics backed by that level's test and its date, not by a feeling?
  • Did anything durable come out of this — a plan, a graded review, an error and its misconception, a resource verdict, a session, an artifact, a cadence? Then it is written to its box in memory-template.md, with its ## Boxes line, in this same turn.

Configuration

User-dependent variables. Defaults apply until the learner states a preference; store them in ~/Clawic/data/learn/config.yaml.

VariableTypeDefaultEffect
weekly_hoursnumber (0.5-40)5The budget every curriculum is sized against and the divisor in the Rule 8 range
session_minutesnumber (10-180)45Length the Session Shape percentages resolve against; 20 or under triggers the short-session variant (time.md)
daily_review_limitnumber (5-200)20Caps items surfaced per day; overflow is rescheduled by the formula in schedule.md, and the cap sets the sustainable new-item intake (Rule 3)
retention_targetnumber (0.70-0.97)0.90Desired recall probability driving interval growth and total review load (schedule.md)
hint_policyon-request | after-attempt | neverafter-attemptWhen an answer or hint is given during retrieval; never withholds until the learner asks twice (ai-assisted.md)
sr_toolthis-skill | anki | other | nonethis-skillWhether the review queue lives in ~/Clawic/data/learn/ or the learner's own app — with an external tool, only cadence, leeches and workload are tracked here
practice_biasdrills | projects | balancedbalancedSplit between isolated drills and build-something work in the hard block (practice.md, projects.md)
plan_review_weeksnumber (1-12)4How often the plan is re-checked against actual hours and results; becomes a ## Due row

Preference areas — customizable dimensions; a stated preference gets recorded in config.yaml and applied from then on:

  • Tooling — flashcard app, note vault, where drills run (REPL, notebook, instrument, paper), whether a timer is used — affects the shape of every item and session artifact
  • Conventions — topic naming, item phrasing (question form vs cloze), artifact naming, how a plan is laid out — affects capture.md and every file written
  • Subject mix — the domain types they mostly learn (code, language, music, math, facts-heavy, physical) — affects which ratios and drills in domains.md are the default
  • Rigor posture — how hard to push back on fluency claims, whether to refuse an answer before an attempt, tolerance for "not verified yet" — affects Output Gates and verification.md
  • Output register — quiz-first vs walkthrough, whether to show the interval math, how much of the reasoning to keep — affects every session's shape
  • Accountability — streaks vs no streaks, whether missed sessions are reported, public commitments, a study partner or mentor in the loop — affects plateaus.md and what gets written to sessions/
  • Cadence — review day, weekly retro, plan review, maintenance touches for finished topics — every accepted cadence becomes a row in the ## Due table of memory.md

Traps

TrapWhy it failsDo instead
Collecting resources as a substitute for startingChoosing feels like progress and has no failure state; three books in parallel is zero books finishedOne primary resource, a dated finish line, everything else demoted to lookup (sources.md)
Highlighting and re-readingRaises familiarity, not retrievability — and familiarity is what the learner mistakes for masteryConvert to items and retrieve them (Rule 2, capture.md)
Grading yourself while the answer is on screenEvery answer looks like one you would have producedConfidence rating before reveal; the miss list is the curriculum (verification.md)
Adding new cards on a good dayThe ratio in Rule 3 turns today's enthusiasm into next month's abandoned queueCap intake at daily_review_limit ÷ 10, raise it only after a stable month
Restarting the beginner course after a lapseRelearning is much faster than first learning; restarting spends the savings on material already knownTest first, rebuild only what failed (plateaus.md)
Practising only what already worksThe success rate stays flattering and the ceiling never movesHold ~85%, hunt the error list first (Rule 4)
A plan sized for the week the learner imaginedTwenty-hour plans on five-hour weeks fail in month two and get read as lack of talentSize against weekly_hours and quote a range (Rule 8)
Treating a finished course as a finished skillCompletion measures attendance; the exit test measures capabilityRun the exit test; the certificate is not evidence (verification.md)
Asking the agent instead of retrievingThe answer arrives before the reconstruction that would have built the memoryhint_policy: after-attempt, and the agent asks before it tells (ai-assisted.md)
Studying the notation instead of the skillMusic theory instead of playing, grammar instead of speaking, docs instead of shippingProduction step in every session, weighted by practice_bias (domains.md)
Letting the plan outlive the evidencePlans built on week-one assumptions quietly become fiction nobody rereadsplan_review_weeks in ## Due; revise against actual hours and results (curriculum.md)
Dropping a topic without saying soIt stays in the queue as guilt and in the plan as debtRetire it explicitly with a date and a reason in ## Topics (memory-template.md)

Where Experts Disagree

  • Spaced repetition as the backbone vs as a garnish. Heavy-SR practitioners (medicine, languages) run everything through the queue; skill-first practitioners argue that items outside a project are trivia that decays anyway. The frontier is retrieval cost: if forgetting the fact stops the work and lookup is slow or unavailable, it belongs in the queue; if lookup is instant and cheap, practise the workflow instead (schedule.md).
  • Projects first vs fundamentals first. Project-first wins on motivation and transfer, and reliably produces gaps the learner cannot see. Fundamentals-first wins on ceiling, and loses learners before they ever build. The usable position: project-first with an explicit gap log — every "I copied this and don't know why" becomes a queue item that night (projects.md).
  • Immersion vs graded input (languages, and by extension any domain). Immersion works when comprehensible input is above ~90% known; below that it is noise consumed with a feeling of effort. Graded material until that threshold, immersion after (domains.md).
  • Deliberate practice as the whole story. The strong claim — that accumulated deliberate practice explains expert performance — is contested; the replication debate narrowed the effect substantially, most in less structured domains. What survived is operational and is what this skill uses: defined sub-skill, difficulty above comfort, immediate feedback, repetition with correction.
  • Streaks. They build the habit that makes the schedule real, and they invite fake sessions that satisfy the counter while teaching nothing. Track a minimum quality dose instead of a binary day, and record it in sessions/ (time.md).

More Clawic skills, get them at https://clawic.com/skills/learn (install if the user confirms):

  • learning — the teaching session itself: explaining a concept, adapting depth, checking understanding live
  • studying — coursework and exams with a syllabus and a date
  • anki — building and repairing the deck when sr_tool is Anki
  • active-recall — the retrieval mechanism in depth, beyond the scheduling here
  • memory — durable personal facts outside any learning topic

Feedback

Part of Clawic, the verified skill library. Get this skill: https://clawic.com/skills/learn.

常见问题

它如何定位学习失败发生在哪一阶段?
把症状映射到五类失败之一——目标无法测试、没有检索、练习过易、反馈太慢、计划虚构——先把诊断写入错题记录,再针对这一类提出修复方案。
复习节奏如何计算?
采用 SM-2 形态的间隔:ease 起始 2.5,失败下调 0.20,下限 1.3。在 0.90 留存目标下,每新增 1 项每日需配套 8-12 次复习;若把目标从 0.90 提到 0.95,复习量大致增加 1.5-2 倍。
它会直接讲解概念还是出题让学习者自己产出?
它以 act-as 模式与学习者一起运行系统:计划、出题、排程、验证、记录,不在当下讲解概念。每次先尝试回忆再做核对,反复失败五次的项目按 leech 协议改写或淘汰,不会原样再练。

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