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About RationalGrid

Know what you think—and show how you got there.

Compare views, trace claims to sources, and keep the path open for you or others to question.

Free to use, not-for-profit, and built in public by a small team.

Start a grid Read the guide

Why RationalGrid?

Some questions deserve more than one answer.

Questions about meaning, belief, identity, doubt, relationships, or public life rarely have one useful answer. You do not need a polished view before you begin.

01

See the whole question

Put the first answer beside its context and alternatives.

03

Question what sounds certain

Separate evidence from confidence or repetition.

04

Decide with reasons

Know what led you to your view.

05

Disagree more usefully

Find where the real disagreement lies.

06

Change your mind well

Add new evidence without starting over.

Explore + recall

AI helps you explore. The grid helps you remember.

AI can suggest answers, questions, and new directions. You choose what to save, check, connect, and share. Each box holds an idea or source, and the lines show how they connect. The result is a useful map, not another chat lost in your history.

Read about AI and exploration

Open by design

Free to use, open source, and not-for-profit. Shared thinking should be easy to check and use again.

View the source Contact us

What you can do

Explore freely. Keep what matters.

Open new paths quickly, then keep enough of the trail to return, check, or share it. The built-in critical-thinking tools were developed in collaboration with Philosophy for All and Peter Worley.

Tools for exploration

Follow the question.

  • Question any part

    Ask about a word, passage, person, book, or whole idea.

  • Match the explanation level

    Choose Simple, Expanded, or In-depth.

  • Explore in any direction

    Keep definitions, arguments, and examples in separate branches.

  • Use critical-thinking tools

    Clarify terms, test assumptions, strengthen arguments, and uncover blind spots.

  • Compare other views

    Find missing interpretations, then compare their evidence.

  • Follow claims to sources

    Ask for primary research, official records, and strong reviews. Important claims still need checking.

Tools for recall

Keep the thinking.

  • Highlight passages

    Save exact text with its source and shareable link.

  • Bookmark useful ideas

    Keep the parts you want to find again.

  • Export the grid

    Download it for notes, sharing, or other tools.

  • Keep a shared record

    Publish, follow changes, and see who added what.

  • Show your thinking

    Collect public grids in a profile others can follow and challenge.

See how the tools work How AI and sources work

RationalGrid for…

Who is it for?

For people who need to compare interpretations, keep evidence attached, and return to the reasoning behind their work.

01

Students

Turn a broad essay or dissertation question into connected claims, counterarguments, and sources you can revisit instead of losing them across notes and chats.

02

Researchers, journalists, and writers

Keep competing interpretations, claims, and sources connected while investigating a topic or planning a piece of writing. Trace conclusions back to the evidence behind them.

People behind the project

A small working team.

Product, philosophy, education, and independent advice.

Tom Berman

Tom Berman

Founder and developer

Maya Darmon

Maya Darmon

Philosophy and reasoning lead

Martin Loat

Martin Loat

Advisor

Peter Worley

Peter Worley

Advisor

Alexandra Konoplyanik

Alexandra Konoplyanik

Advisor

Feedback

What would make RationalGrid more useful?

Tell us what worked, what was unclear, or what you expected next.