How a nine year old changed how I teach

Some habits look like rules until something breaks.

The answer is never zero

Ten years ago I flew to Dublin with a pocket full of stickers and no idea what I was doing. Here's what a decade taught me.

Three keynote speakers. One week to go. The same doubt.

At my yearly review, someone asked me when I last went to a conference just to be in the audience. I had to think about it longer than I expected.

You can practise alone. But you cannot always see your talk from the outside.

How to avoid the visual clichés that flatten your ideas.

The brain is a difference detector.