> > Appeal to authority (argument from authority, argumentum ad verecundiam) – an assertion is deemed true because of the position or authority of the person asserting it.
> You have to be careful with this one. When someone has enough credibility, sometimes you need to question yourself if you disagree.
This is true in all disciplines, and yet the fallacy exists—because there's a difference between "an assertion is deemed true because of the … person asserting it" (emphasis mine; a fallacy) versus "an assertion is given more weight because of the person asserting it" (a perfectly reasonable shortcut, as long as the assertion is still given some vetting).
> You have to be careful with this one. When someone has enough credibility, sometimes you need to question yourself if you disagree.
This is true in all disciplines, and yet the fallacy exists—because there's a difference between "an assertion is deemed true because of the … person asserting it" (emphasis mine; a fallacy) versus "an assertion is given more weight because of the person asserting it" (a perfectly reasonable shortcut, as long as the assertion is still given some vetting).