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docs: give realistic tutorial 4 runtime guidance - #74

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Jammy2211 merged 2 commits into
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feature/howtofit-runtime-guidance
Oct 23, 2026
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Jammy2211 merged 2 commits into
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feature/howtofit-runtime-guidance

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Tutorial 4's first 15-parameter fit promises under a minute despite a recorded 385.1-second run. Set expectations to several minutes, cite that approximate measurement, and explain hardware and sampling variation.

Closes #72.

Scripts Changed

  • scripts/chapter_1_introduction/tutorial_4_why_modeling_is_hard.py: explanatory prose and first progress message only; fit settings unchanged.
  • Regenerated corresponding notebook with PyAutoHands. Navigator generation produced no catalogue changes.

Validation

  • Inspected the generated diff: only intended prose changed in script and notebook.
  • git diff --check passed.
  • Runtime measurement is the original Mind task's 2026-09-15 four-core measurement, not a newly measured timing.
  • Heart vitals: STALE, published reason release validation stale: source moved since rehearsal (PyAutoFit, PyAutoGalaxy, PyAutoLens). Local readiness likewise reports missing baseline evidence; no release claimed.

Part of four linked teaching tasks, each with its own issue/PR. Stop at review; no merge authorization.

Picks up HowToFit#75's smoke epilogue (BlackJAX + Nautilus).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qy3Nc9rZwKHwQgPt8kMyeD
@Jammy2211
Jammy2211 merged commit 03946b6 into main Oct 23, 2026
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Jammy2211 deleted the feature/howtofit-runtime-guidance branch October 23, 2026 22:23
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docs: set realistic expectations for tutorial 4 runtime

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