This essay takes—as its point of departure—Cavicchi’s (2006) argument that knowledge develops through experimentation, both in science and in educational settings. In attempting to support and extend her conclusions, which are drawn in part from the replication of some early tasks in the history of developmental psychology, the late realist-constructivist theory of Jean Piaget is presented and summarized. This is then turned back on the subjects of Cavicchi’s larger enquiry (education and science) to offer a firmer foundation for future debate. (...) Several of Piaget’s “forgotten works” are discussed; their theoretical contributions synthesized to form a single interdisciplinary, cross-pollinating narrative describing how it is that both children and scientists grow into the world. (In addition, translated excerpts from two related historical documents have been provided in an appendix, while detailed footnotes add further context and integrate the discussion with current advances in related fields.). (shrink)