The following question appeared in "the Ethicist " column of the New York Times Magazine. "Some knowledge about hypothermia comes from brutal Nazi medical experiments conducted on prisoners of war. Considering the data came from the destruction of their lives, are there ethical issues when modern-day scientists use it? Could it be considered a form of collaboration with the Nazis? Or does the origin of the data matter if the data is useful? Declaring the data off-limits could lead to preventable deaths, while using the data seems coldheartedly clinical." What is the Jewish response to this seeming dilemma?