On tipping points and feedback loops
Malcolm Gladwell popularized the concept of tipping points with his book The Tipping Point: How Little Things Can Make a Big Difference. Although his book was mainly dealing with pop-psychology, the utility of the term has led to its spread throughout several disciplines. But the arena where it has really come into its own is the environmental movement. Scientists have struggled to find a way to explain complex environmental changes in ways that will make them comprehensible to the layperson. The concept of tipping points is just such an explanation. Wikipedia gives us an example of how tipping points can simplify the understanding of climate changes:
A climate tipping point is a point when global climate changes from one stable state to another stable state, in a similar manner to a wine glass tipping over. After the tipping point has been passed, a transition to a new state occurs. The tipping event may be irreversible, comparable to wine spilling from the glass—standing up the glass will not put the wine back.In much the same way as you can gradually tip a wineglass to the side, climactic or ecological changes can accumulate slowly. Once the tipping point is reached however, gravity or some analogous force takes control and the situation can change rapidly.