Yahoo Japan looks outdated. It may be the better homepage.
A mobile comparison of Yahoo Japan and Yahoo US, and what the evidence actually says about information density, visual complexity and putting useful things above the fold.
Read essay →Selected writing
Ideas worth keeping.
A short edit of the pieces that best represent how I think about software, design, research and cities. The full blog remains the complete archive.
Trying to beat analytical models with LLMs in the stock market
A trading-agent experiment that started with FINSABER, wrapped ARIMA-style signals in Mercury 2, and ended with the analytical baseline winning.
Read essay →Is Japan unusually equal for its scale?
Adjusting for population helps Japan a little. Germany is why scale cannot explain the gap with Northern Europe.
Read essay →My AI writing workflow
Give the model real context, generate less, and delete anything that explains what the reader can already see.
Read essay →Rebuilding my blog
Astro, Markdown, GitHub Pages, Cloudflare, and a publishing flow I can use from ChatGPT on my phone.
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