During a visit to the mental asylum, a visitor asked the Director what the criterion was which defined whether or not a patient should be institutionalized. "Well," said the Director, "we fill up a bathtub, then we offer a teaspoon, a teacup and a bucket to the patient and ask him or her to empty the bathtub." "Oh, I understand," said the visitor. "A normal person would use the bucket because it's bigger than the spoon or the teacup." "No." said the Director, ...... "A normal person would pull the plug. Do you want a bed near the window?"
[中文版] 有一位訪客往精神病院探訪向院長查詢說：「你們是如何界定病患者需要接受住院治療，標準為何呢？」院長回覆說：「我們會先把浴缸注滿水，然後給予病者一個湯匙、茶杯、及水桶，請他舀乾浴缸裡的水。」訪客遂說：「噢，我明白了！一個正常人一定會選用水桶來舀乾水，因為水桶容量比湯匙和茶杯大囉！」院長回應說：「不！一個正常人會拔掉浴缸中的塞子放水！你需要一個靠近窗邊的病床嗎？」
