I can see that the correct answer is required to make the conclusion function, but doesn't the 'if' statement make the installation costs of the generators irrelevant? isnt the conclusion just positing that given the generators being functional, they would reduce energy costs and save money? So why would the answer depend on the generators being functional when the conclusion only applies If the generators are already functional? "imagine we are in a hypothetical world where steel plants 'could feed' the heat they produce into the generators. My conclusion is constrained to that world". so why is that dependent on the generators being affordably cheap?