And I wouldn't do this, mind you. I just thought of it, for no reason, out of my desire to help spread awareness of A.D.D., that's all.
But. Just supposing you were to return to your apartment after checking your mail and realize that you couldn't get in because you didn't have your keys in hand (hypothetically), so you retrace your steps and find the keys where you left them....
You might need A.D.D. medication.
This has been a public service announcement.