As a physicist I learned that different, contradictory theories can be complimentary because they approach the truth from different sides. As an employee,´I ca

As a physicist I learned that different, contradictory theories can be complimentary because they approach the truth from different sides. As an employee,´I cannot buy a yacht. I am free to choose many different jobs that all pay about the same for the amount of effort (or less, if I am unskilled in that field for example). So I think at least at the micro level, the labor theory of value still has some explanation power: It explains why there is no free lunch (for employees), but also why you'll want to have people work for you if you want to make more money.