Modeling Application

What are the some limitations of using expoential models for the world's population growth?

Public Comments

1. Well, the most obvious one is that population growth can't continue at an exponential rate. The world will eventually run out of space, and a long while before that it will run out of resources.
2. those are to many big words sorry
3. Resources, space, and the completion for these.
4. An exponential model assumes that growth will continue exponentially, i.e. that the rate of increase will be proportional to the size of the existing population. Clearly, this is not a realistic assumption, since the population would eventually become infinite. There are other models that allow the rate of growth to taper off. One such model is a so called Gompertz curve, and these models usually produce a curve in the form of a flattened "S". Over a short period of time, an exponential curve can describe the growth rate of populations, including those of bacteria in a culture.
5. hm... well i'm no expert but... we would run out of space for all those people as well as resources. there would be economical problems, problems with the earth (pollution), and political problems.