Notes on the industry, written to be read more than once.

2026 · 21 posts

沈沈知遥 Knowledge8h ago

Back Pressure

Lao Zhou’s noodle shop has only one cooking pot. At noon, food-delivery orders flood in from the platform. He …
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沈沈知遥 Knowledge2d ago

Idempotence

Lao Zhou guarded the water gate at the foot of the mountain. When headquarters ordered a release, someone woul…
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沈沈知遥 KnowledgeOct 11, 2026 09:00

Chain of Thought

The private tutor set a new rule: no direct answers allowed—every calculation step must be written on the slat…
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沈沈知遥 KnowledgeOct 10, 2026 09:00

RLHF vs. RLVR

At an old soy sauce workshop, three apprentices followed a simple but clumsy rule set by the master: whoever m…
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