What Really Preserves the Labour Theory of Value?

Who still believes in the labour theory of value, rather than the more recent subjective version? Or, perhaps there's actually a more relevant consideration: How much personal belief in a labour theory of value manifests unconsciously, instead of at an ideological level? Chances are, unconscious attributions for labour value are a stronger contributor to economic outcomes than what is often debated. One might envision the general equilibrium result as power relationships in skills arbitrage, for that matter.

Indeed, underlying assumptions regarding labour value, greatly affect how high skill human capital has been conceptualized, especially since the workplace transitions of the twentieth century. Professional groups often rely on a non tradable sector structural framework which allows human capital inputs to take precedence over the aggregate outputs of time based product.

In this instance, it turns out that subjectivity cuts both ways. Consider how a subjective theory of value in terms of product, previously benefited from direct correlation with good deflation and recognizable gains in standards of living. It made sense to emphasize the subjective reality of product value regardless of labour contribution, when progress could be largely attributed to tradable sector productivity gains. But more recently, subjectivity has become associated with societal expectations as to what quality product represents. The consequent emphasis away from baseline utility, has muddied the waters for product subjectivity, especially for potential labour value contributions. Alas, quality time based product often includes excessive inputs at multiple institutional stages, before the product output intended for consumers actually takes place.

While my impressions re subjectivity dovetail somewhat with those of the Austrian school, many such discussions feel more relevant for historical periods of tradable sector dominace. Madson Pirie reflects on Carl Menger's many contributions to subjective value, and notes:

He founded what is now called the Austrian school. His crucial insight was to recognize that price is not based on what it costs to produce goods, as traditional economists had supposed, giving rise to the labour theory of value on which the edifice of Marxism is built, but on what the demand is for them.

He adds:

...value does not reside in the object, deriving from its input, but resides instead in the mind of the observer, representing his or her estimation of its worth. 

Even if arbitrary definitions for quality standards reduced the impact of good deflation for tradable product, at the very least many forms of tradable sector product provide standard utility which can be readily discerned. Alas this hasn't proven the case in non tradable sectors, where a reasonable baseline for product utility has long been abandoned in favor of requirements which - among other things - have muddied the waters of true productivity gains.

Given the subjectivity of economic outcomes, a better utility baseline is needed for non tradable sector product in general. A better definition of basic non tradable sector utility - especially for housing and time based product options - could clear some of the present fog as to how aggregate productivity, hence potential economic gains, might once again be measured with confidence.