Having been working on my feet for so many years, I always kept extra pair of shoes at the shop and another in my car. One day I went to change shoes but one spare was missing. Couldn't find it anywhere. Was raining really hard that day and was in a hurry to the car. When I got home the other was sitting on the side of the driveway filled with water. I stilled had changed one shoe at work though. Yes they noticed.