What does it mean that notice what you are not seeing?

The most important information is often in what you habitually ignore.

Example: A senior engineer reviews a deployment dashboard and sees all services reporting healthy. Everything looks green. But she pauses and asks: 'Where are the logs from the payment service?' There are none — not errors, not warnings, not even info-level output. The service isn't healthy. It never started. The absence of data was the most important data on the screen, and every other engineer walked past it because they were scanning for red, not for missing green.

Try this: Choose one domain you interact with daily — your calendar, your codebase, your team standup, your inbox. Instead of scanning for what is there, spend five minutes writing down what is absent. What meetings are not happening? What topics never come up? What people never speak? What errors are not being logged? Write at least five absences. Then pick the one that surprises you most and investigate whether it matters.