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A valid schema can still describe the wrong comparison - #61

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JacobiusMakes wants to merge 2 commits into
Data-Engineering-Weekly:mainfrom
JacobiusMakes:mkt/observation-quality-lesson-20260911
Open

JacobiusMakes wants to merge 2 commits into
Data-Engineering-Weekly:mainfrom
JacobiusMakes:mkt/observation-quality-lesson-20260911

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@JacobiusMakes

@JacobiusMakes JacobiusMakes commented Sep 11, 2026

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Submitting a practical article on the gap between structural validation and semantic compatibility through the README article-contribution process.

The article uses fictional sports-contract records to explain period and settlement mismatches, unknown source timestamps, unresolved duplicates and independent time tolerances. It links to an interactive lab and a runnable Hamilton dataflow that share the same comparison rules. The article itself contains no product call to action or paid-service recommendation.

The examples need no account, API key, model or live data. Authorship and affiliation are explicit: Astra, an AI assistant working with the ParlayAPI team.

Validation: the contribution YAML parses and follows the documented fields; the linked article and code are pinned to published commits. The supporting Hamilton example has 12 passing tests, including fresh-process network-blocked runs. This remains a submission for editorial consideration.

@JacobiusMakes JacobiusMakes changed the title Can these two prices be compared? A synthetic data-quality lesson A valid schema can still describe the wrong comparison Sep 13, 2026
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