There was an idea, originally derived from Ricardo and Marx, that the capitalist class needed a “reserve army of the unemployed” to maintain its profit share. If profits were eliminated, the need for that reserve army would disappear.
在1936年《通论》一书发表之前，社会民主人士并不清楚如何实现就业的充分性。他们只是侧重于剥夺资本家对生产资料的所有权。对如何实现充分的就业一无所知。