Essay

Consequences of human difficulty on error rate targets

Question: Why is it problematic to rely on human performance to set targets when building a system to recommend movies or ads? Discuss the relationship between human capability and the optimal error rate based on the provided text.

Sample answer: When humans have a hard time solving a problem, such as deciding which movie to recommend or ad to show, they do not provide a strong baseline. Because human performance is poor on these tasks, it cannot serve as a reliable proxy, making the optimal error rate very hard to estimate.

Key points:

  • Humans struggle with tasks like movie recommendations or ad targeting.
  • Poor human performance cannot serve as a reliable baseline.
  • This makes the optimal error rate hard to estimate.

Rubric: The essay should identify that poor human performance removes a reliable baseline, making the optimal error rate hard to estimate, and should cite movies or ads as examples.

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Updated 2026-05-27

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Machine Learning

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Supervised Learning

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