There were a couple of other points I wanted to touch on. One is the measurement of ambient air condition in buildings, because of course that determines the energy efficiency of the building. To a large degree these days, it is by the amount of air that you have to bring in and bring out.
We have set standards that don't deal with the air condition, they just deal with the volume of air movement and the time of day. Would you say that we need to revisit the kinds of standards we set for indoor air movement or replacement and start to look at systems that will give us measurements of the actual condition of the air indoors before we change it?