Albert Einstein once famously said that doing the same thing over and over again and expecting different results is the definition of insanity.
It could also be said that it is the definition of how a four-year-old plays with toys. Call it discovery rather than insanity, the latter of which is a condition more descriptive of full-grown adults.
Consider the case of a small child playing with toy cars. “If I put these toys on the top of the fence where they often fall on the other side and become unreachable, should I (1) continue putting the toys on top of the fence, or (2) stop putting the toys on top of the fence?”
Ahhh, the tenuous connection between action and consequence: That connection is the great undiscovered country for a four-year-old, and learning how it operates is a Critical Life Skill. Some little ones figure it out pretty quickly, while others take a bit longer.
And some of us adults never quite get it. Being human dooms many of us to living on the slack side of the learning curve.