Duh Moment #526: The key to success is somewhere on my key ring
These days, most of what I have to unlock I can do by remote control. There's the little remote on my key ring that locks and unlocks the car, and of course we have the garage door opener that gets us into the house.
So after work tonight, when I went to open our post office box, I held out the remote and pushed the button. Couldn't figure out why nothing happened.