What will that prove?

What will that prove?

What truth or quality is that going to meaningfully validate or demonstrate? A: "I'm going over there to knock his block off!" B: "And what will that prove? That you're tougher than he is? That you're a real man? All it proves to me is that you're just another hotheaded fool." I thought about lawyering up and taking him to court, but what will that prove? Nothing that will be worth all that time, money, and hassle, that's for sure.
See also: that, what, will
Farlex Dictionary of Idioms.
See also:
  • go for (something)
  • go for it
  • got
  • go well with
  • go well with (someone or something)
  • going to (do something)
  • cut (one) off at the pass
  • cut off at the pass
  • far from it
  • go with