Some of the smartest systems we use every day are invisible.

You don't notice them when they work.

You only notice them when they stop.

A traffic light. A payment going through. A tap giving clean water. A message arriving instantly. WiFi that just connects.

The best design often looks ordinary because someone solved the hard problems before they reached you.

That's one reason I appreciate the people who build and maintain the things most of us never think about.