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First principles · IN SHORT

What is established?What is assumed?

Strip a plan back to evidence, hard constraints and inherited conventions. The skill turns eight to twelve assumptions into testable claims and identifies which risks to examine first.

First principlesSKILL

Your brief

I want to charge the same as a competitor, but I do not know whether they sell at that price.

Possible draft

Fictional example: pricing a workshop

The advertised price is an observation; willingness of your customers to pay it remains an assumption. Examine previous purchases and a bounded offer before building the whole workshop.

Illustrative example

01 / THE FOUNDATION

You bring the context.The skill adds structure.

What you provide

  • The plan, deadline and what is at stake.
  • Budget, people and existing obligations.
  • Evidence behind assumptions and ideas borrowed from others.

What you get back

A precise goal, likelihood and impact table, two to four primary risks and a redesigned plan.

02 / SEE HOW IT WORKS

From an idea to a draft.

Illustrative exampleFictional example: pricing a workshopRead the example

Your brief

I want to charge the same as a competitor, but I do not know whether they sell at that price.

Possible draft

The advertised price is an observation; willingness of your customers to pay it remains an assumption. Examine previous purchases and a bounded offer before building the whole workshop.

This example shows the approach. It is not a client result or a guarantee of a particular outcome.

03 / GET STARTED

A repeatable approach.Your own context.

  1. Separate facts and conventions

    Distinguish arithmetic facts, obligations and choices being treated as fixed truths.

  2. Make claims testable

    Write eight to twelve falsifiable assumptions and score likelihood, impact and evidence separately.

  3. Rebuild with evidence

    Choose a low-cost test for each primary risk and explain how the plan could change.

04 / MAKE IT YOURS

Ready foryour work.

Take the instructions, add your own context and review the draft. You stay in control.

Full information

First principles

Download. Apply. Refine.

Download the skill (English)

File language: English

From download to use

  1. Save the ZIP file: ai-first-principles-thinker-skill-for-claude.zip.
  2. Using Claude? Follow the installation guide for your environment. Downloading alone does not activate the skill.
  3. Then provide your own brief and the context listed above. Review the output before using it.
Installation guide (Dutch)
Keep in mind
  • Risk scores support prioritisation; they are not measured probabilities.
  • The skill does not predict success or confirm regulatory requirements or market demand without evidence.