The Hamsa Book · contents

The story

  1. 1The flood, and the videos that came after
  2. 2A triage desk, not an oracle
  3. 3One post, from a phone to a verdict

How it works

  1. 4Seeing footage before: three fingerprints
  2. 5Finding the evidence, in two languages
  3. 6Models propose, rules decide
  4. 7A memory, not a library
  5. 8Under the hood: one laptop, open models

The proof

  1. 9The numbers, and what went wrong
  2. 10What Hamsa does not do yet
← Back to Hamsa

How it works · Chapter 6

Models propose, rules decide

Why the step that decides where a case goes is not an AI model at all.

Every AI step in Hamsa produces a structured answer: a claim, a match score, a label, a confidence, a list of sources. None of them decides what happens next. A short set of written rules reads those answers and decides, in the same order, every time.

Did any step fail?yesA checker looksnoSeen this post before?yesMerged with the earlier reportnoIs there a claim to check?noDismissedyesDoes the evidence conflict?yesA checker, shown the conflictnoIs there a signal that can't be faked?old footage + false, an AI watermark, a fact-check…yesQuick checkone click from publishingnoA checker, told why it fell short
The rules run in this order, every time. The AI supplies the answers to each question; the rules, written down and tested, decide.

Why a quick check needs an unfakeable signal

A model's confidence is not enough to put a case one click from publishing, because a model can be sure and wrong. A quick check needs something independent of the model: the frames matching footage from somewhere else, an AI generator's watermark, a published fact-check that agrees, or two independent trusted sources, each on top of a confident draft. Everything else goes to a checker, with the reason it fell short written on the case.

When the evidence conflicts (a source that supports the claim against one that refutes it, or a Nepali translation that does not match the English), the case always goes to a person, with the conflict shown.