One of the great things about kids is that they keep you on your toes. Not just because you have to worry about them all the time, but because they give you so many more things to notice. As we talked about a long time ago, if you have a son that likes helicopters or a daughter that\u2019s obsessed with birds, there\u2019s suddenly a reason for you to be a lot more aware as you go through the world. There\u2019s stuff for you to look for, to point to, stuff that you would ordinarily have a kind of adult\u2019s b...