Notes
Short pieces on building systems end to end: the decisions, and the small details that would otherwise become someone’s pain point.
Nov 2026
Why write code for low emissions
The home page of this site weighs 60 KB. The median page on the web is about forty times that. Here is why I keep mine small.
3 min · 1 image
Nov 2026
Code and human health
A lot of the power behind software in Nigeria comes from generators a few metres from where people live. That changes what efficiency means.
2 min · 1 image
Nov 2026
Sustainable data centres
Data centres use about 1.5% of the world's electricity, and the share is growing. Most of what makes one efficient is ordinary, and some of it is decided by the people writing the software.
3 min · 1 image
Nov 2026
Software decides when devices die
Most of a phone's carbon is spent before you switch it on. When software pushes a working phone into a drawer, that cost gets paid again, and the old one has to go somewhere.
3 min · 1 image
