Describes how the ideas of Heinz von Foerster compel us to explore the question, Do we discover the world or do we invent it? and suggests that we must know how... » 

Describes how the ideas of Heinz von Foerster compel us to explore the question, Do we discover the world or do we invent it? and suggests that we must know how we think before we can claim knowledge of the world. Constructivism examines the limits of what we can know. «