 Popper has been a champion of the humanizing effects of such an interdisciplinary synthesis.Key to his initial thinking and activities as an aesthetician, cultural theorist, curator, teacher, and art critic was his encounter in the early 1950s with the kinetic artist (and author of the book "Constructivism"), George Rickey.He subsequently encountered the artists Nicolas Schoffer and Frank Malina, whose works were based on first or second-hand scientific knowledge.