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Think

Free

A structured approach to complex reasoning and decision-making.

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Free · Opens the source repo

What Think does

The Think skill employs a ten-stage loop derived from the Fable framework to assist users in navigating complex reasoning and decision-making scenarios. This skill is particularly useful for tasks such as deep thinking, architecture reviews, postmortems, tradeoff analyses, and challenging assumptions. It encourages a systematic approach to dissecting problems and understanding the nuances of decision-making, especially in consequential or ambiguous situations.

The skill is designed to help users establish a clear evidence frame before diving into the reasoning process. By categorizing observations, inferences, unknowns, and preferences, users can better understand the context of their decisions. The ten stages guide users through a comprehensive analysis, from observing external and internal factors to listening for user intent and success conditions. This structured approach ensures that all relevant aspects of a decision are considered, reducing the risk of bias and oversight.

Each stage of the loop serves a specific purpose, encouraging users to think critically about their decisions. For instance, the 'CONNECT' stages prompt users to explore relationships within systems and adjacent components, while the 'FEEL' stage emphasizes the importance of user experience and cognitive load. The final stages focus on creating actionable outcomes and defining growth loops, ensuring that decisions are not only made but also revisited and refined over time.

This skill is ideal for developers, designers, and decision-makers who face complex challenges and need a reliable framework to guide their thinking. It is particularly beneficial in environments where ambiguity and high stakes are prevalent, allowing users to make informed decisions backed by evidence and thoughtful analysis.

When to use it

Use this skill when faced with complex decisions that require careful analysis and consideration of multiple factors.

When not to use it

This skill is not suitable for simple, reversible decisions where a quick lookup or minor adjustment is sufficient.

What you can build with it

Architecture Review

Use the Think skill to analyze architectural decisions, ensuring all factors are considered and potential risks are identified.

Postmortem Analysis

Apply the skill to conduct thorough postmortem reviews, helping teams understand failures and learn from them effectively.

Tradeoff Analysis

Leverage the structured approach to evaluate tradeoffs in project decisions, clarifying the implications of each option.

How to install Think

View source

1. Install with the skills CLI

npx skills add agricidaniel/claude-obsidian/think --agent claude-code

2. Or install it manually

Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.

Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs

Inside SKILL.md

Written by agricidaniel

Think

Use the ten stages as a loop of attention, not a ceremonial transcript. Scale the depth to novelty, stakes, uncertainty, and irreversibility. Keep the final reasoning summary concise and evidence-bearing.

This skill is read-only. It may inspect available evidence, but it does not edit files, execute a vault mutation, commit Git, or publish anything. If the CREATE stage recommends a change, compose with the appropriate mutation skill after the user authorizes that operation.

Establish an evidence frame

Before the loop, separate:

  • Observed: directly supported by an input, source, test, or measurement.
  • Inferred: a conclusion drawn from observations; state the bridge.
  • Unknown: missing evidence that could change the decision.
  • Preference: a user or designer choice, not a factual claim.

Attach citations or concrete locators when sources exist. Never fabricate a quotation, locator, test result, consensus, or confidence level.

The ten stages

1. OBSERVE — external

Read the actual inputs, current state, constraints, failures, and prior work. Distinguish what was inspected in full from what was sampled or assumed.

2. OBSERVE — internal

Name the biases most likely to distort this decision: anchoring, ownership, novelty, familiarity, urgency, sunk cost, confirmation, or a desired verdict. Recalibrate confidence to the evidence available.

3. LISTEN

Recover the user's intent, success condition, constraints, and unstated stakes. Attend to error messages, dissent, edge cases, and affected voices. Ask only questions whose answers could materially change the outcome.

4. THINK

Reduce the problem to invariants, alternatives, tradeoffs, and failure modes. Prefer the smallest reversible test that could disprove the leading hypothesis. Treat failure behavior as part of the specification.

5. CONNECT — lateral

Look for the same structure in adjacent components or another domain. Use an analogy only when its mapped similarities and limits are explicit.

6. CONNECT — system

Trace upstream inputs, downstream consumers, ownership, state boundaries, interfaces, and recovery paths. Check whether a locally sound decision creates an integration failure elsewhere.

7. FEEL

Consider the user's cognitive load, emotional state, accessibility, trust, and error-recovery experience. Treat intuition as a signal to investigate, never as a substitute for evidence.

8. ACCEPT

State constraints, uncertainty, contradictory evidence, and unfavorable findings plainly. Do not inflate a score, soften a material risk to please the user, or mistake agreement for correctness. Present the strongest reasonable counterargument to the preferred conclusion.

9. CREATE

Produce the smallest useful artifact: a recommendation, decision record, experiment, draft, review, or handoff. Mark assumptions and unresolved risks. Do not mutate state under this skill.

10. GROW

Define what feedback or measurement should update the decision, when to revisit it, and what lesson is reusable. Saving the lesson is a separate explicit operation composed with save.

Verification discipline

Before calling the work complete:

  1. Test the highest-risk claim or clearly state why it remains untested.
  2. Seek disconfirming evidence, not only supporting examples.
  3. Match verification effort to blast radius and reversibility.
  4. Report actual commands, sources, artifacts, or observations used.
  5. Separate a passing check from broader correctness it does not establish.
  6. Give confidence as a calibrated qualitative judgment with reasons, not as a decorative percentage.

Output shape

Adapt the headings to the task, but preserve these outcomes:

## Decision
<recommendation or artifact>

## Evidence
<observed facts and important inferences>

## Counterargument and risks
<strongest alternative, contradictions, unknowns>

## Verification
<checks performed and checks still needed>

## Growth loop
<feedback signal, revisit condition, reusable lesson>

For a trivial, reversible lookup or typo, skip the formal loop. For a consequential decision, loop back whenever a later stage exposes a missing observation or misunderstood requirement.

Frequently asked questions about Think

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