Why does profit cover up the exploitative relationship of capitalism?

(1) Surplus value is transformed into profit, which obscures the real source of surplus value and blurs the exploitation relationship of capitalism, because profit is the product of the whole prepaid capital, that is, the result of capital self-proliferation. However, this transformation is only a qualitative transformation, and the profit is still equal to the surplus value in quantity. Here, people can feel some connection between profit and workers' living labor and surplus value more or less.

(2) When the average profit is formed, after the profit is converted into the average profit, the same amount of capital will get the same amount of profit. Surplus value and profit not only have qualitative changes, but also have quantitative differences. At this time, the capital invested in various departments, although different in organic composition and surplus value of production, all profit at the same average profit rate. Therefore, the average profit is expressed qualitatively and quantitatively as the product of all prepaid capital.