Is something that aught never to be done. and they did it simply because they could. they've looked at young children, the elderly, and they have actually targeted people who are predisposed to disease. and they have done it and used the data to no good effect. in other words, they have done the studies and don't even use the data they have. >> so this particulate matter, people were needlessly exposed and risked? >> that's exactly right. and they had other way to collect equal or better data and chose not to do that. >> how specifically did they do this? go into communities and set up wood-bu...