believe that every society has a Malthusian limit, a population tipping point which will spark such a crisis. The concept of a Malthusian check on population levels has been debated extensively, especially in the 20th century, with the rapidly growing human population raising concerns for some people.
The idea of a Malthusian catastrophe was put forward by Thomas Malthus in An Essay on the Principle of Population in 1798. Malthus pointed out that human populations tend to grow exponentially, whil