Hi! I know value for Marx is a complex topic with lots of debate i.e. the transformation problem. I'm trying to understand the basics a bit more but am very perplexed.
I sort of understand that value for Marx is a non-empirical category that is expressed through exchange value. For example, Norbert Trenkle writes, "For it is neither possible to filter out the substance of labor from commodities, nor consistently to derive the values of commodities from the level of empirical appearance (that is, from the level of price)."
And that money is a way of measuring value: "Marx (1990a: 188) holds that value has two measures, money and labor-time" (Kilman).
I have questions:
So does this mean that once value becomes expressed as money and labour time, it is being expressed in its empirical form? If so, why are surplus value and price both expressed in money? I thought surplus value was also a non-empirical category that had different empirical expressions?
And what exactly does it even mean to say that value is "non-empirical?" I understand this to mean that it is not quantifiable. But even the definition of value as socially necessary labour time - isn't it already quantifiable as socially necessary labour time that can be counted e.g. if I am producing hats for exchange on the market, I know in advance how much time I should produce each hat in in order to be competitive on the market?
Could you give me simple example of what value means as a non-empirical category? What is socially necessary labour time as a non-empirical category?
Or is value like a more abstract principle, such as "I need to produce commodities as efficiently as possible" that gets expressed in more concrete, measurable forms such as exchange value once the commodity enters circulation on the market?
I know there's likely my ignorance of Hegelian concepts behind this.
I hope my questions make sense, and thanks in advance.
Y