Then write the bloody check. In this case, it would be because I'm doing your work for you (i.e., it is your responsibility to substantiate your arguments, not mine).
I know your game from previous threads. It is not invective to tell you that in my opinion you know nothing about gold as money.
You didn't state it as opinion, you merely asserted it as fact without any proof, and of equal semantic content to calling me a "poopy-head." In short, as invective.