The Dream of Reality: Heinz von Foerster's Constructivism is a book by Lynn Segal first published in 1986. Segal, a licensed clinical social worker, examines the constructivist epistemology of physicist and philosopher Heinz von Foerster. Originally intended as a transcription of von Foerster's lectures, the book evolved into Segal's interpretation of von Foerster's constructivism written in everyday language.