Sismondi also contributed a great deal to economics with his thoughts on aggregate demand. Observing the capitalist industrial system in England, Sismondi saw that unchecked competition both resulted in producers all increasing individual production (because of lack of knowledge of other producers' production) this was then seen as forcing employers to cut prices, which they did by sacrificing workers' wages. This yielded overproduction "and" underconsumption; with most of England's workforce suffering from depressed wages, workers were then unable to afford the goods they had produced, and underconsumption of goods then followed. Sismondi believed that by increasing the wages of laborers they would have more buying power, be able to buy the national output and thus increase demand.