Where did you go to university? http://www.drechsel.com/stmap_570e0.html?viagra.dipyridamole.procardia nexium iv pediatric dose  But this reasoning breaks down in the instances Sutherland describes. That’s because, when you have first-class and second-class categories, you know in advance which ones will be profit-generating. In that instance, there’s no reason to maintain excess capacity in the loss-generating categories. Just get rid of them!