[ImSkeptical]

Unless I'm mistaken, the relationship between supply and demand is still a well regarded concept in economics - if the supply of labor doubles, the cost of labor will...

A) Be unaffected

B) Increase

C) Decrease

I'm not saying there is a fixed amount of work, I'm making a supply and demand argument to argue that the cost of labor will fall when the supply increases. Thus, I think my analysis isn't committing this fallacy, but if be happy to consider your reasoning if you care to explain.

[greglindahl]

You'd get a low grade in economics class with such an argument -- the issue is that in the long run, the market responds to the availability of new inputs (in this case, lots more labor), and in the long run you have no idea how the relationship between supply and demand will change.