The young man agrees. Rabbi holds up two fingers " Two men come down a chimney. One comes with a clean face and the other comes out with a dirty face. Which one washes his face?

The young man stares at the Rabbi. "Is that a test in Logic?" The Rabbi nods.

"The one with the dirty face washes his face" He answers wearily.

"Wrong. The one with the clean face washes his face. Examine the simple logic. The one with the dirty face looks at the one with the clean face and thinks his face is clean. The one with the clean face looks at the one with the dirty face and thinks his face is dirty. So the one with the clean face washes his face."

"Very clever" Says Goldstein. . "Give me another test"

The Rabbi again holds up two fingers " Two men come down a chimney. One comes out with a clean face and the other comes out with a dirty face. which one washes his face?

"We have already established that. The one with the clean face washes his face"

"Wrong. Each one washes his face. Examine the simple logic. The one with the dirty face looks at the one with the clean face and thinks his face is clean. The one with the clean face looks at the one with the dirty face and thinks his face is dirty. So the one with the clean face washes his face. When the one with the dirty face sees the one with the clean face washing his face, he also washes his face. So each one washes his face"

"I didn't think of that!" Says Goldstein. " It’s shocking to me that I could make an error in logic. Test me again!."

The Rabbi holds up two fingers " Two men come down a chimney. One comes out with a clean face and the other comes out with a dirty face. Which one washes his face?

"Each one washes his face"

"Wrong. Neither one washes his face. Examine the simple logic. The one with the dirty face looks at the one with the clean face and thinks his face is clean. The one with the clean face looks at the one with the dirty face and thinks his face is dirty. But when the one with clean face sees that the one with the dirty face doesn't wash his face, he also doesn't wash his face So neither one washes his face"

Goldstein is desperate. "I am qualified to study Talmud. Please give me one more test"

He groans when the Rabbi lifts his two fingers "Two men come down a chimney. One comes out with a clean face and the other comes out with a dirty face. Which one washes his face?

"Neither one washes his face"