paul ehrlich, on the other hand, said that we would run out of natural resources and that the result would be that we will ultimately run up against these constraints. he made a lot of converts in his book. riedl the jim wright along these lines. never mind the fact that we have not run out of any of those resources yet. nonetheless he continued to put this forward. in a debate between the two, julian suggested that it might be useful to put your money where your mouth is. julian wagered that he was right, namely that we had an ability to deal with resource constraints, that the result would be that we would expect to see not only resources going up in price, we would expect to see resources going down in price. if we found ways to utilize the resources at hand, it should result in less scarcity, not more. he rarely left himself off the podium at this notion. julien said -- i tell you what, let's bet $1,000, up eight the resources that you like, i will bet you that the price goes down. if you are right, the price goes up. we will purchase a hypothetical amount of these resources. wit