Logical arguments don't depend on credibility. If I say All men are mortal; Socrates is a man; therefore Socrates is mortal, I'm not asking you to trust me. It'

Logical arguments don't depend on credibility. If I say All men are mortal; Socrates is a man; therefore Socrates is mortal, I'm not asking you to trust me. It's a logical argument and you can defend or attack its validity based on the argument itself, not whether I have a vested interest in Socrates being mortal.