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Three things I got wrong measuring my own cache

A team that produces regulatory documents kept getting the same kind of question from other teams: does the current rule allow X?

  • Overlooked issue with negation pairs, labeling error not caught by testing
  • Control group too easy, minimal token differences between accept/reject pairs
  • Misinterpreted embedder failure as semantics issue, not surface form understanding

AWS Shared Responsibility Model Who Takes Care of What in the Cloud

Boa parte dos incidentes de segurança na nuvem não acontece porque a AWS falhou — acontece porque alguém assumiu, incorretamente, que a AWS cuidaria de algo que na verdade era responsabilidade do…

  • AWS Shared Responsibility Model clarifies security responsibilities in cloud services.
  • AWS responsible for infrastructure security, customer responsible for data and application security.

My tests could fail. They still could not tell me I was wrong.

A test proves your code does what you meant. It cannot prove that what you meant was correct. I could have written that sentence a year ago. I still shipped on the wrong side of it this week.

  • Test failed to confirm code correctness
  • Bug related to QIF payee and memo fields
  • Writer discovered importance of testing assumptions

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