Since my children are getting older and there will be less reason to use a child-carrying bicycle, I bought a fixed-gear bicycle. This is a record of what I bought and how I customized it.

We are introducing AI-based writing correction into a product under development. Through quality checks comparing AI and humans directly, I recognized both AI's limits and human strengths.

This article is inspired by the Kaigi on Rails 2024 closing keynote on wholeness, repairing, and having fun, but it develops a different argument through Christopher Alexander, Gilles Clément, Hiroki Azuma, the Ethereum Foundation, and Robert Pirsig.

With the rapid development of AI, many companies are considering AI-based product development or AI integration. This article summarizes strategies and cautions from a product management perspective.

RubyKaigi 2024 was held at Naha Cultural Arts Theater NAHArt in Naha, Okinawa. I attended with my wife and two children.