We didn't know. But today, some of the former workers I talked to are still skeptical that the company didn’t know more than they let on. Ivan says a woman with the company’s HR department told him she didn’t know what test he was talking about. But the world of a scientist is a gray world. Hoplamazian, narrating: “The world of a scientist is gray.” But whether the government says water is safe to drink or not is black and white.