Life throws some unexpected surprises at you.
Sometimes you follow your life path. Then life throws a few obstacles in your way. Sometimes you have to button up your cardigan over your shirt and tie, roll up the slim jeans and take a walk; but don't forget your umbrella. The reason is that you can never be sure when the rain will pour. Or, if you happen to be in Phoenix laying out under a tree and wet semi-solid objects begin falling from the sky, you will find that an umbrella would have been prudent.