Fifth Postulate

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This is the public notebook and resume I want every other profile to point back to.

The name is a joke I like: Euclid’s fifth postulate is the awkward one, the assumption you notice only after you have been using it for a while. A lot of engineering feels like that.

Hello, Fifth Postulate
https://fifth-postulate.pages.dev/blog/hello-world
Author Haoran Yang
Published at July 2, 2026