Cognitive Biases are Features, not Bugs
Why experience doesn’t help. Why experience doesn’t protect us from cognitive biases — and what actually helps making better technical and professional decisions.
New: Helioporeo
A visual time zone planner for calls and daylight.

Get it on Google Play

Learn more at helioporeo.app

Anchoring in effort estimates
The first number sticks — and how to turn a supposed objective estimate into a testable model.

About me

I studied philosophy and psychology—and found my way into software development while I was still at university, back in the mid-1990s.

I’ve worked on complex systems for major European media organisations and research projects, designed and evolved enterprise applications, and built my own apps from the first idea through to release. Since 2001 as an independent developer: https://customwebcode.com

On this website I collect

notes and ideas from my life as a software developer—shared in the hope that others may find them useful too.