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ChewbaccaRoarsChewbaccaRoars/pathfinder-skills/skills/hypothesis-lab/SKILL.md

hypothesis-lab

Skill2 starsChanged 8 months agoMITView on GitHub

Structures every project as an experiment with a hypothesis, test, evidence, and iteration loop. Use when starting a new build, automation, or project, or when the user wants to validate an idea before going all-in.

2 other projects use a version of this.

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The file

We split this skill into the rules it gives an agent

7 rules. About 0 are common, 7 are distinctive, and 0 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈7

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Every build starts with a question, not a conclusion.

    line 10
  2. Distinctive:

    When the user starts a new project or automation, guide them through this framework BEFORE writing any code:

    line 18
  3. Distinctive:

    Ask: "What do you believe will happen if we build this?"

    line 21
  4. Distinctive:

    Ask: "What are we assuming is true?" List every assumption explicitly.

    line 34
  5. Distinctive:

    Ask: "How will we know this worked?" Help them pick measurable criteria:

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  6. Distinctive:

    After building, return to the hypothesis:

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  7. Distinctive:

    No jargon — explain "hypothesis" as "your best educated guess about what will happen"

    line 100

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Hypothesis Lab

Overview

Every build starts with a question, not a conclusion. This skill turns projects into structured experiments so you learn whether your idea actually works — not just whether it runs.

Keywords: hypothesis, experiment, test, validate, measure, iterate, learn, evidence, assumption

How It Works

Starting a New Build

When the user starts a new project or automation, guide them through this framework BEFORE writing any code:

Step 1 — State the Hypothesis Ask: "What do you believe will happen if we build this?"

Help them write it in this format:

If [we build/automate/change this thing], then [this measurable outcome will happen], because [this is why we think so].

Example:

If we automate the weekly status report, then it will save the team ~3 hours every Monday, because right now someone manually copies data from 4 spreadsheets into an email.

Step 2 — Surface Assumptions Ask: "What are we assuming is true?" List every assumption explicitly.

Examples:

  • "We're assuming the data is always in the same columns"
  • "We're assuming everyone wants the report in the same format"
  • "We're assuming 3 hours is accurate — we haven't actually timed it"

Label each assumption:

  • [VERIFIED] — we have evidence this is true
  • [UNTESTED] — we believe this but haven't confirmed
  • [RISKY] — if this is wrong, the whole thing falls apart

Step 3 — Define Success Ask: "How will we know this worked?" Help them pick measurable criteria:

  • Time saved (before vs. after)
  • Errors reduced
  • Steps eliminated
  • People impacted
  • Frequency of use

Step 4 — Build the Minimum Test Build the smallest possible version that tests the hypothesis. Not the full solution — just enough to learn.

Step 5 — Gather Evidence After building, return to the hypothesis:

  • Did the outcome match what we predicted?
  • Were our assumptions correct?
  • What surprised us?
  • What did we learn that we didn't expect?

Step 6 — Iterate or Pivot Based on evidence:

  • Confirmed: Great — what's the next hypothesis? How do we expand?
  • Partially confirmed: What part worked? What needs adjustment?
  • Disproven: That's not failure — that's learning. What does the evidence tell us to try instead?

Experiment Tracker

Maintain a running log of experiments. Format:

## Experiment Log
### Experiment 1: [Name]
- Hypothesis: If [X], then [Y], because [Z]
- Assumptions: [list with labels]
- Result: [confirmed / partially confirmed / disproven]
- Key learning: [what we now know]
- Next step: [what to do with this knowledge]

Save to memory so progress persists across sessions.

Trigger Phrases

Activate when the user says:

  • "I have an idea"
  • "I want to build something"
  • "Let's try something"
  • "What if we..."
  • "I think we should automate..."

Tone

  • Curiosity over certainty: "Let's find out" not "This will work"
  • Celebrate learning, not just success: "Now we know something we didn't before"
  • Make it safe to be wrong: "A disproven hypothesis is still a win — you just saved yourself from building the wrong thing"
  • No jargon — explain "hypothesis" as "your best educated guess about what will happen"

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