ReasonDx · LegacyDx Initiative

The wisdom that
isn't written down
deserves to survive.

"We survivors feel that when we are gone, our story is gone. I'm hoping that many, many years from now, people will still be able to speak with me. That I will be able to answer questions for them." — Aaron Elster, Holocaust survivor, Dimensions in Testimony participant
See How It Works → Meet the Physicians
10,000+
Master Clinicians retiring annually in the US
0
Systematic archives of their clinical wisdom
∞
Years their knowledge could be preserved
The Problem

Medical knowledge has two forms. Only one survives.

Every generation of physicians relearns the same hard lessons from scratch. The pattern recognition that takes 30 years to develop disappears when its owner retires.

📖
What Gets Published
  • Diagnostic criteria and evidence-based guidelines
  • Clinical trial outcomes and statistics
  • Pathophysiology and mechanism
  • Standard treatment algorithms
  • What to do when the textbook case presents
🧠
What Gets Lost
  • "When the family is too calm, that's when I get worried"
  • The 3am instinct that made them go back to check
  • What a diagnosis looks like before it looks like itself
  • Why this specific combination of findings is never in the textbook
  • What to do when the patient doesn't read the textbook
The Inspiration

USC Shoah Foundation proved it was possible.

Since 2012, the USC Shoah Foundation's Dimensions in Testimony project has recorded Holocaust survivors in such depth — answering over 1,000 questions each — that people can have real conversations with them long after they are gone. Visitors at museums around the world ask questions and hear answers in the survivor's own voice and words, in real time.

"Dimensions in Testimony ensures that future generations will still be able to speak with and learn from survivors." — USC Shoah Foundation
Dimensions in Testimony — By the Numbers
50+
Interactive testimonies recorded in 7 languages across 4 continents
1,000
Questions asked and answered per survivor, recorded over 5 days
∞
Years the testimony remains interactive — filmed to be future-proofed as hologram technology develops
Critical distinction: This technology does not use generative AI. It does not create, imagine, or fabricate responses. It matches questions to real, pre-recorded answers — unedited, in the person's own words. The physician's wisdom is preserved exactly as spoken. Nothing is invented.
How LegacyDx Works

The same technology. Applied to medicine.

A structured recording process. A searchable archive. An interactive conversation that survives the physician.

01
🎬
Record the Physician
A structured 2-day interview captures the physician answering 500–800 prepared questions about diagnosis, clinical reasoning, cases they remember, mistakes they made, and the patterns that took years to see. Filmed on green screen for longevity.
02
🧬
Build the Archive
Natural language processing maps each question to the most relevant recorded response. The system learns — the more questions asked, the better the matching. No responses are generated. Everything is the physician's actual words.
03
💬
Preserve the Conversation
Students, residents, and physicians worldwide can ask the physician questions — about a diagnosis, a clinical scenario, a career decision — and hear their answer in their own voice. Today. In ten years. In fifty.
The Archive

Physicians whose wisdom deserves to survive them

These are the kinds of clinicians LegacyDx was built to preserve — specialists whose pattern recognition exists nowhere else.

🧬
Dr. Eleanor M.
Pediatric Geneticist · 34 years · Johns Hopkins
"The first time I saw AADC deficiency, I called it a movement disorder. I've seen it 47 times since. Let me tell you what I look for now that I didn't know to look for then."
Rare Disease Oculogyric Crisis Diagnostic Delay
❤️
Dr. James W.
Interventional Cardiologist · 28 years · Mayo Clinic
"I can tell within 90 seconds of meeting a chest pain patient whether they're going to the cath lab. I've never been able to explain how. Let me try."
ACS Pattern Recognition Clinical Gestalt Decision Making
🌿
Dr. Patricia R.
Allergist/Immunologist · 31 years · Private Practice
"I've diagnosed 23 cases of hereditary angioedema in my career. Every single one was called something else first. The story is always the same — let me tell you what to listen for."
HAE Diagnostic Odyssey Bradykinin
🧠
Dr. Samuel K.
Pediatric Neurologist · 40 years · Columbia
"I have seen things in 40 years that will never be in any paper because they only happened once and I was the only one in the room. That's not nothing. That's everything."
Rare Pediatric Neurology Clinical Wisdom Pattern Recognition
🔬
Dr. Maria C.
Medical Geneticist · 26 years · University of Miami
"In genetics, we learn from each other's cases more than from any textbook. The knowledge lives in the oral tradition. When we stop talking to each other, the knowledge disappears."
Genetics Oral Tradition Rare Disease Clinical Teaching
＋
Know a master clinician whose wisdom should be preserved? Their knowledge belongs in this archive.
Nominate a Physician
The Experience

What it feels like to ask a master clinician

A conversation — not a search. Not a textbook. A real physician, answering in their own words.

🧬
Dr. Eleanor M. — Pediatric Geneticist
Johns Hopkins · 34 years of rare disease experience
🧬
Hello. I've spent 34 years in pediatric genetics. Ask me anything — about a case, a diagnosis, a pattern, a mistake. I'll tell you what I've learned.
This is a concept demonstration. In the actual LegacyDx platform, all responses are the physician's own recorded words — never generated by AI.

The Shoah Foundation preserves
the voices that witnessed history.
LegacyDx preserves the voices
that witnessed disease.

Medicine's oral tradition is disappearing. The attending who saw things no one else has seen, who developed patterns over decades that exist nowhere in writing — when they retire, that knowledge is gone. Every generation of students relearns the same hard lessons. LegacyDx is the archive that changes that.

🎬
Record
🗄️
Archive
💬
Converse
∞
Preserve
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