...accomplishes nothing = não leva a nada, não chega a lugar nenhum
Example: Foreign residents in Japan shouldn't be held accountable for bad things other people in their country of origin are doing. Arguing about which countries have worse stereotyping accomplishes nothing.
(...) A: I guess we should go this way... B: No, it's that way... A: C'mon, I'm sure it's this way... B: You must be kidding... A: Alright, we don't agree, but this discussion won't get us anywhere. (...)