To put it another way, they assume that the natural equilibrium of the global environment simply cannot move. Unfortunately, that just ain't so. It used to be, but it's not anymore. In a similar way, the Holocaust shapes every idea we have about human nature. The overuse of pesticides presents a similar danger, again because of a feedback loop.
Pesticides often leave the most resistant pests behind as the more vulnerable ones disappear.
Wurzburg in the summer of 1819 and, after famine and revolutionary fervor had exacerbated tensions and resentments, quickly spread throughout Germany and as far north as Amsterdam and Copenhagen. However, it seems just as clear that climate changes were only one of the many causes leading to these events. What no study has suggested is that a change in the global climate pattern may explain the Mayans' collapse. That may be at least part of the solution to the mystery of the disappearing Mayans.