The Masterful Problem Solving Skills of a 4-Year-Old

I just witnessed the 4-year-old sneeze what sounded like a humongous amount of snot into his hand. He then looked at it briefly and started to motion towards wiping it on his pants. He then hesitated, assumedly remembering his parents' constant nagging to not do this type of thing. In my mind, I felt a momentary, small sense of pride for my wife and my own parenting skills. Yes, I thought, we have succeeded at teaching him at least one life skill. He then looked at his hand again. I could see the wheels turning in his head as he contemplated the proper solution to the problem that he now faced. He then proceeded to lick it entirely off his hand. Problem solved.