You walk into the kitchen to get a pair of pliers and come back with a butter knife. Now you're standing in the living room wondering why you have a butter knife, having forgotten you needed a pair of pliers. Suddenly you remember, with some embarrassment, that you went into the kitchen to get the pliers. Older people are not any wiser than young people, but they use it more often. Young people know better, but they do it anyway.
Older people are slower, they take time to think it through.
And still we all make those stupid mistakes. You've heard about the three men and one young Boy Scout in the airplane. It's about to crash and they only have three parachutes. So he took a parachute and jumped out of the plane. I can change the world with my intellect.