Separate fact from assumption.
What do you know? What are you taking for granted? Start by telling them apart.
FIRST PRINCIPLES THINKING, MADE SIMPLE
Big questions.
Simple answers.
Tell us what you're trying to figure out.
Find what matters, in words that make sense.
Live answers are coming soon. Explore an example below.
Or try an example
BACK TO THE BASICS
Less noise. A clearer starting point.
Find what actually matters.
Focus on your goal and the limits that affect it. Leave the extra noise behind.
Take one useful next step.
Get a small action that helps you test the answer in the real world.
A LITTLE MORE CLARITY
Understand the thinking behind the answer.
THE BASICS
What is first principles thinking?
A simple explanation, without the philosophy lecture.
Read the guide IN PRACTICEFirst principles thinking examples
Three everyday problems, rebuilt from the basics.
Read the guide THE METHODHow to think from first principles
A small method for the next problem in front of you.
Read the guideBEFORE YOU ASK
A few simple answers.
What is first principles thinking?+
First principles thinking means identifying reliable basic facts, questioning assumptions, and building an answer from those foundations. It helps you separate what must be true from what you have simply taken for granted.
What kinds of questions can I ask?+
Ask about a decision, a problem you want to understand, or an idea you want to build. Explain your goal and any important limits. If a missing detail would change the answer, the tool may ask one follow-up question.
Will the answer always be certain?+
No. A clear answer can still be provisional. The tool explains what could change its recommendation and does not treat assumptions as proven facts.
How is this different from a long AI conversation?+
The format puts one key answer first, followed by a short explanation and one next step. You can open the assumptions and limitations when you need more context.
Are my questions made public?+
Your questions are not published on the site. When you ask for an AI answer, your text is sent through our server to fal.ai, OpenRouter, and the model provider. See the privacy page for the limits of this protection.
Start with the question you already have.
Find what matters