After thousands of interactions with young people often barely old enough to talk, Piaget began to suspect that behind their cute and seemingly illogical utterances were thought processes that had their own kind of order and their own special logic.

• 通过上千次与常常是刚会说话的孩子对话，皮雅杰开始相信，在他们机敏和似乎缺乏逻辑的言词背后，可能存在着有其自身条理和特殊逻辑的思维过程。