- Thomas Malthus (1766-1834)
- Population grew exponentially (doubled at each stage)
- Food production grew arithmetically (adding one at each stage)
- population would outgrow food supply, then decrease due to starvation.
- Natural checks were used to reduce population. They were split into two catorgries.
- Positive checks reduce population E.G. famine or deaths
- Negative checks limit population growth E.G. postponing marrage