Hello

Hi, I’m Ken. I’m interested in the products and technologies that power commerce. You can read more about me, what I’m reading, or what I’m thinking about. You can chat to me about any of those things, or anything else, via email.

Blog

Sometimes I write about things that are interesting to me.

• The GPT wrapper is dead. Long live the GPT wrapper.
  2026-04 | 4 min
• Making and meeting Moloch
  2026-03 | 11 min
• Vibe-coding ants
  2026-03 | 10 min
• When must we lobotomize ourselves?
  2025-07 | 10 min
• Postgres performance: how poor statistics affect join strategies
  2024-01 | 6 min
• Building a payments product: introduction
  2024-01 | 8 min
• The optimal amount of most Bad Things is non-zero
  2023-09 | 3 min
• Write more, even if it's bad
  2023-09 | 2 min
• Everything is Tradeoffs
  2023-09 | 1 min
• Make your values less useless
  2023-08 | 4 min