You've found my site. I write essays to explore technology, music, and what it means to live a good life. According to my resume, I am a product designer and owner.
Don't know where to start? Visit a /random page. Here's what I am doing now.
About Geffrey van der Bos

Building Mimir, a notebook you won't have to tame. Yes, yes. Another one. Follow along and judge for yourself.
Some napkin math turns out I need € 900 per year to keep developing and running Mimir. That's € 75 per month on software licenses, (e.g. Linear, Paper.design, Claude Code Pro), Apple Developer Program, domains, Migadu mail, small OpenRouter use, Cloudflare, and mostly the VPS that runs the sync service.
That's excluding my own needs, like a salary, coffee, Macbook usage, etc. (naturally, that's my choice.)
It is totally worth it. It's a kickass product that I use daily. And I learn TONS about everything and anything. Also about my own sensibilities.
But it's also quite a price to pay for a 'hobby project’.
Essays
- Matter of taste
- Beyond the job title
- What we lose to AI music
- Manifesto of curiosity
- Productivity with background music
- Music with(out) dynamics