 What are the ethical standards that we're using and following? And Hilleman says at the time, the two sort of guiding ideas were... Do no harm. Do no harm. And do good. And do good. In those days, in the 1960s, the thinking at the time when you were in these chronic care long-term facilities, the level of hygiene and sanitation in those areas was terrible. It was crowded. Disease was rampant. Well, they all...