I pass these words everyday that I drop my 4 year old off at school. They are part of a promotional bumper sticker that her school gives out. Not being a bumper sticker kind of guy, I never really thought about those three words until yesterday.
Play. Explore. Learn. - that sums it all up for me. Now, if you think you don't have time to play or are too important to play then replace 'play' with 'research' or 'study' or 'think'. But for me it is definitely play in the kitchen.