Nothing. Were all friends and friendly. So when the cameras go down, depending on the mood or the nature of the material were dealing with, theres usually a kind of a prevailing light attitude thats floating around. – Richard Dean Anderson
But, if you observe children learning in their first few years of life, you can see that they can and do learn on their own – we leave them alone to crawl, walk, talk, and gain control over their bodies. It happens without much help from parents. – Daniel Greenberg