~/talk

Falsehoods Programmers Believe About Reality

Talkat PyCon AU 2025 · 2025-09-12..09-16· [python]
github:RyanLilly
slides:none on file

Names, time, geography and categories repeatedly break systems: claim that more data = better model is false, and large language models are described concretely as probabilistic token predictors — not mirrors of human nuance — with examples like a SharePoint+LLM search failure, student-name matching that never reaches 100%, and EV routing that had to account for broken chargers. Practical prescriptions include designing abstractions for a stated purpose, auditing who benefits, avoiding overcapture of data, and treating the map is not the territory when measuring outcomes.

AI-written summary · about

  1. 0:00Introduction
  2. 1:03Computers and objective reality
  3. 2:26Falsehoods about reality
  4. 7:09More data vs better representation
  5. 10:39LLMs as mirrors limitations
  6. 13:48Measurable vs immeasurable reality
  7. 16:58Reality is subjective
  8. 18:47Artificial categorization
  9. 20:31Forcing reality into categories
  10. 22:57Airspace algorithmic homogenization
  11. 24:46Overcapture dangers
  12. 25:48Abstractions as tools
  13. 27:15Designing with purpose
  14. 27:58Building useful systems
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