一、对社会必要劳动时间理论（即第一含义社会必要劳动时间）的实践意义的责难是没有根据的我国理论界有一种观点，认为由社会必要劳动时间决定的价值仅仅是一个理论上的抽象，在实践中，是无法计算的；或者如姜先生所认为的那样，“是一种理想的，少有的，概率几乎等于零的” First, the censure of the practical significance of the socially necessary labor time theory (that is, the first implication of socially necessary labor time) is unfounded. There is a view in our theoretical circles that the value determined by the socially necessary working time is merely a theoretical abstraction , In practice, can not be calculated; or as Mr. Jiang believes, “is an ideal, rare, the probability is almost equal to zero”