A family of understanding tools

The hardest conversations, held better.

Common Ground is a small family of tools for the part of talking nobody teaches: disagreeing without losing each other, hearing what an exchange is really doing, and understanding the ideas that were written over your head.

It never picks a side. It never fakes a fact.

Never picks a side. Never fakes a fact. Four tools, live today, held to both.

The Tools

Four tools. One set of rules.

Each is its own product with its own job. All four are live today — statuses below are honest, and every link goes to the real, working tool.

I — Crux

For two people who disagree.

Paste a disagreement. Crux maps where two people actually diverge — a fact in dispute, a value in conflict, a definition talked past, or a phantom disagreement that dissolves on contact — and puts the ground you already share on equal footing with the conflict.

Every divergence classified: factual, values, definitional, or phantom
A common-ground panel, first-class, not a footnote
A steelman toggle — each side's best version of the other's case

"It never says who's right."

LiveTry Crux ↗

II — Counterpoint

For hearing what a conversation is doing.

Paste a conversation. Counterpoint renders its structure as music: good-faith exchange resolves in consonance, two people talking past each other drift apart, and an argument lands as a tritone clash. It keeps no score.

Conversation structure rendered as live counterpoint
Built for reflection, not scoring — nobody wins a song
Web and mobile

"Nobody wins a song."

LiveTry Counterpoint ↗

III — Rosetta

For documents written over your head.

Paste a document written over your head — a medical paper, a legal contract, a scientific abstract. Rosetta translates it to exactly your altitude, five stops from first-timer to fellow expert, without changing what the document claims. Pin a section and move between altitudes at will.

Five altitudes, first-timer to fellow expert — pin any section and move between them
Integrity-preserving: simpler words, same claims
Not medical or legal advice — a translation, never a verdict

"A translation, never a verdict."

LiveTry Rosetta ↗

IV — Unfold

For understanding anything, all the way down.

Type a claim. Unfold opens a clear explanation where every substantive idea expands inline when you click it, down and down until it bottoms out in a first principle — or in an honest "nobody knows." Every span it opens is re-derived from the text above it.

Recursive explanations that open inline, down to bedrock
Every unfolded span re-derived from the parent text — never invented
Unknowns labeled as unknowns, on purpose

"An honest 'nobody knows.'"

Live · model key pendingTry Unfold ↗

How they behave

Three vows, kept in code.

These tools sit inside people's most delicate moments — a fight with a partner, a diagnosis they're trying to read, an idea they're afraid to admit they don't understand. That earns extra discipline, not less.

Never a referee

No tool in this family declares a winner, scores a person, or takes a side. They surface structure — where you diverge, what you share, what the text actually says — and hand the judgment back to you.

Never a fabricated fact

Structured, grounded output with anti-hallucination guards is the family's engineering signature: claims trace to the text they came from, and what can't be grounded doesn't ship.

Honest about the edge

"Nobody knows" and "not stated" are first-class answers. A tool that admits the edge of its knowledge is the only kind worth bringing into a hard conversation.