Every day we should hear at least one little song, read one good poem, see one exquisite picture, and, if possible, speak a few sensible words.” — Johann W. von Goethe


The cover photograph depicts Iceland, taken by Willian Justen de Vasconcellos.The footer photograph depicts Consolation Lakes, Canada, taken by Maarten van den Heuvel.

About Zer0.degree

Zer0.degree is the blog of Archy Wilhes 魏何. Handcrafted by Archy using Hakyll. Source code available on Github. Founded in 2018 as a continuation of 0a.io (founded back in 2014) and to commemorate the loss of the domain.

About Archy Wilhes

Wilhes, Archy Wilhes.    姓魏何,名家豪,字阿奇博爾德 (archy)

Communicator. System Architect. Functional Programmer. Product Designer. Art Person.

Co-founder & CTO of Castella.

22 years of age. With 10 years of experience in wiring up apps and websites.


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  1. I had formally reduced the Erdös-Szekeres conjecture into a constraint unsatisfiability problem [pdf on arxiv] && formulated a new proof for the Moessner’s theorem with double induction [pdf on arxiv] && completed a Ph.D. module in Programming Language Theory - all these when I was 19. And then I lost my virginity.

  2. I started coding at 12. I founded my first start-up at 16 (back in 2012, after dropping out from Catholic High School) and eight months later it died. I began freelancing & working for different start-ups since then.

  3. I was the lead developer & shareholder of a start-up that got into the Startup Battle in TechCrunch Disrupt London 2016. Still, just like most start-ups it ran out of its runway eventually and died.

  4. I speak English, Cantonese, and Mandarin fluently. But most importantly, I use emacs -)


Handcrafted by Archy Wilhes 魏何

Frontend consists of vanilla JS, CSS & HTML with Bootstrap
Backend written exclusively in Haskell using Hakyll

See you around.