As this worker used the machine and became more productive, the price of washers would fall, demand for washers would rise, more washers would have to be made, and there'd be more work for his pals to do.
À medida que o trabalhador usasse a máquina e produzisse mais, o preço das arruelas cairia, a demanda aumentaria, mais arruelas teriam que ser produzidas, e haveria mais trabalho para seus colegas.