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- world’s populations: grow exponentially

- food is essential: sustains life, provides energy, promote growth

- different effects on human population

- “Essay on the principle of population”, Malthus published in 1798= argued that the
planet’s population would persist at a level simply adequate to support life

- Malthus sustained that food has a leveling effect

- > food = > births and longer lives: population can only grow? No for Malthus

- fish and algae= increased food means more fish to feed
        > fish increase= exponential
        > Algae increase= linear

- food is not enought for the large school of fishes, the population
increase is short-lived= many fishes die= equilibrium

- famine and disease= positive checks

- social welfare and food redistribution to the poor = to solve this and outwit the
population “trap”

- Malthus wants “preventative checks”: human preventative behavior, celibacy, delayed
marriage, emigration

- His theory: acknowledged as the most influential work of its era