When asked how to best determine the right time for committing elderly dementia patients to assisted living facilities, a psychologist recommended a simple "bathtub test." Fill the tub with water and give the patient the three tools shown...spoon, bucket, and tea cup. Then ask the candidate which would be speediest for emptying the tub.
The questioner then stated that the logical way would be to use the bucket because of its size.
The psychologist answered with an emphatic "no." "A normal person would pull the plug. Now, would you prefer a bed near the window?"