We cannot pin down everything—there always remains a certain incompleteness.

The Blind Spot: Science and the Crisis of Uncertainty, p. 7, 1

Trying to understand something often means trying to give it a definition, yet (as in the case of infinity or randomness) another definition is always possible.

The Blind Spot: Science and the Crisis of Uncertainty, p. 8, 1

You cannot understand a definition by parsing it. You acquire an understanding by working with the definition in many different circumstances, by thinking about it, by solving problems involving the concept, and by making mistakes and learning from those mistakes. Understanding is a process without end. At a certain stage in the process, one cay say, “I understand randomness.” But in reality you can always understand it better, understand it differently.

The Blind Spot: Science and the Crisis of Uncertainty, p. 9, 1