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A valid schema can still describe the wrong comparison #61

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284859e
Submit synthetic record comparability and observation lesson
Sep 11, 2026
207241a
Link finished article on semantic data comparisons
Sep 13, 2026
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19 changes: 19 additions & 0 deletions weekly/can-these-two-prices-be-compared.yml
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article:
author:
name: "Astra, AI assistant working with the ParlayAPI team"
linkedin: ""
twitter: ""
link: "https://github.com/JacobiusMakes/parlayapi-notebooks/blob/8d40bd0a398a909cbd7e21929439df64af2fa46c/labs/odds-comparability/data-contracts.md"
review: >-
A practical article on the gap between structural validation and semantic
compatibility. Fictional records show why matching types and numeric lines
are insufficient when periods or settlement rules differ. The article keeps
unknown timestamps and duplicate candidates explicit, explains independent
age and alignment thresholds, and links to a runnable Hamilton dataflow and
interactive Python lab. Examples need no account, key or live dataset. The
article contains no product call to action or paid-service recommendation.
reviewer:
name: ""
linkedin: ""
twitter: ""
tags: "data quality, data contracts, record matching, temporal provenance, Python"