If God has made the world a perfect mechanism He has at least conceded so much to our imperfect intellect that in order to predict little parts of it we need not solve innumerable differential equations but can use dice with fair success.
Being a father at a later age is different from when I had my other two daughters when I was in my 20s and 30s. If you're in your 60s and you're with the kid every day you're dealing with the mind of a child so it opens up that childishness in you again.