There is an interesting connection between the way that moderns think of time and economic value. Modern philosophers of science tend to concrete the aspects of time that are abstract or mental. So, we get Einstein proposing a block universe and the prevailing view among modern philosophers of a similar sort of eternalism. Modern economists tend to abstract or make mental what is concrete in economic value.So, we get the pure subjective theory of value from economists.
Both are wildly incorrect, but it is an interesting parallel that the modern mind cannot stand those things which bridge the gap between the mental and the extramental. The modern cannot understand what requires both dimensions to be understood and consequently moves the object of inquiry into one or the other.