dr. stein evaluates his price control experience. it's something to be avoided like the plague.probably gave us more inflation than we would have had if we hadn't done this. if you put them on in peacetime they're very difficult to get rid of. if they last for a long time, they're terribly destructive. economists now agree that price controls didn't work back in 1973. why would it have been better to let the market set prices? economic analyst richard gill explains. we have to understand a little about the price system itself. in this connection economists usually make some assumptions about human behavior-- namely, that people generally tend to act in their own self-interest. consumers might want all the goods they could get but most of them have limited budgets. they must choose one good over another. in making these choices, they try to maximize their own welfare. the same is true of producers. they try to maximize their firm's profits. it will be in their own self-interest they will maximize their profits, if they use more efficient productive methods and produce goods that

dr. gary wean stein recorded the conversation with her. >> thanks for getting well >> well, after that videoas recorded, nina pham departed dallas. fellow nurses gathered outside to say farewell, many holding signs. she then boarded a plane. pham is en route right now to the national institutes of health in maryland which has an isolation unit. meantime, president obama authorized the pentagon to call up reserve and national guard troops and if they are needed to assist in the u.s. response to the outbreak in west africa. >>> the president tonight talked about a possible travel ban from west africa. >> i don't have a philosophical objection necessarily to a travel ban if that is the thing that is going to keep the american people safe. the problem is is that in all the discussions i've had thus far with experts in the field, experts in infectious disease is that a travel ban is less effective than the measures that we are currently instituting. >> the president said he may also appoint an ebola czar. all the ebola cases in the u.s. so far have involved adults. what happens if the case involv

dr. francis collins is a very wonderful expert on this, and is a very sober person. he told this to sam stein of the huffington post, if he says it, and i don't think he's given to hyperbo hyperbole, i think he means it. they have been coping with cuts. we lived through a period of austerity where both parties at times have looked for cuts and they've looked to some of our health funding and particularly prevention and containment programs, which are labor intensive. it may seem that we're not dealing with a pandemic, so we don't need this department. but it's like a fire department. they might sit around for a while, but you need them when there's a fire. so there's a notion that has hurt infrastructure and research, absolutely. >> sema, your view on the budget cuts, has it affected the possibility of a vaccine to have been found by now? >> absolutely. and not just vaccines, but also public health preparedness. when i was working at the cdc, we had consistent cuts in public health funding. we always felt like we were trying to do more on less year after year. preparedness is one of the keys

dr. frieden from the cdc went to visit people, he was completely covered. it seems like they may be underestimated the risk or is that my niavete. >> ebola had never stein inside of a u.s. intensive care unit. we know a lot of other infections spread around because of all the body and blood fluid there. mr. duncan got the most advanced techniques and continued dialysis, things that had never happened before with an ebola patient. that put the nurses at an increased risk because of the high amount of contact they would have had with his fluids. >> all right. eric. i understand that point. let's get to how we keep it from coming in here, if possible. mary scalvo, a woman on a ship wound up testing negative. belize, mexico, they wouldn't let that ship anywhere near them. so there is an aggressive move toward retaliation, maybe too much. maybe it's fear-based. how long do you think we will keep doing the screenings here? do you think they're helpful and there are now 100 senators backing a ban if travel. what do you think happens there? >> well, i think the screenings must continue. it's absolutely imperative. because again there are two parts on the travel. it's