"I was a research assistant for some German professor who studied eating behavior among foundlings and ordinary babies, when fed by nurses or sometimes the mother of the babies. I watched behind a one-way mirror and recorded the distance between the adult and the baby and what they did and said to get the infants to eat."
"Do you recall anything about that German professor?"
"Yes, his name was Kurt something or other."
"Could it have been Kurt Lewin, by any chance?"
"Yes, that's it; that was his name. Why? Is he important?"
"Yes, for the field of experimental social psychology and maybe for pointing you in a career direction of observing human nature surreptitiously."
"That's curious. What a small world it is!"
"And a wonderful world for social psychologists."