Population/natural resource exhaustion related crises are a bit iffy, because it is plainly obvious that if they remain exponentially growing forever, relative to linearly growing or constant resources (like room to live on), one or the other has got to give.
Mispredicting when it will happen is different from knowing that it has to happen eventually, and how could it not?
Even expanding into space won’t solve the problem, since the number of planets we can reach as time goes on is smaller than exponential population growth rates and demands for resources.
There are definitely plenty of other scientifically held views that get overturned here and there, though—another example is fever, which for centuries has been considered a negative side effect of an infection, but lately it’s been found to have beneficial properties, as certain elements of your immune system function better when the temperature rises (and certain viruses function worse). http://www.newscientist.com/article/mg20727711.400-fever-friend-or-foe.html
Population/natural resource exhaustion related crises are a bit iffy, because it is plainly obvious that if they remain exponentially growing forever, relative to linearly growing or constant resources (like room to live on), one or the other has got to give.
Obviously the people disputing the wrong predictions know this. Julian Simon was just as familiar with this trivial mathematical fact as Paul Ehrlich. The fact that this knowledge led Paul Ehrlich to make bad predictions indicates that his analysis was missing something that Julian Simon was considering. Often this missing something is a basic understanding of economics.
Population/natural resource exhaustion related crises are a bit iffy, because it is plainly obvious that if they remain exponentially growing forever, relative to linearly growing or constant resources (like room to live on), one or the other has got to give. Mispredicting when it will happen is different from knowing that it has to happen eventually, and how could it not? Even expanding into space won’t solve the problem, since the number of planets we can reach as time goes on is smaller than exponential population growth rates and demands for resources.
There are definitely plenty of other scientifically held views that get overturned here and there, though—another example is fever, which for centuries has been considered a negative side effect of an infection, but lately it’s been found to have beneficial properties, as certain elements of your immune system function better when the temperature rises (and certain viruses function worse). http://www.newscientist.com/article/mg20727711.400-fever-friend-or-foe.html
Obviously the people disputing the wrong predictions know this. Julian Simon was just as familiar with this trivial mathematical fact as Paul Ehrlich. The fact that this knowledge led Paul Ehrlich to make bad predictions indicates that his analysis was missing something that Julian Simon was considering. Often this missing something is a basic understanding of economics.