If their directions are telling the truth and are correct, then it's evidence based and not faith-based. If they aren't telling the truth of have got the directions wrong, then my belief in what I think to be evidence is mistaken so my belief is actually faith-based.
What I think to be evidence and whether it's actually evidence or not are two different things.
And as Adrian says, as most people tend to give directions only when they know the truth, it usually is evidence, but not always. I could be mistaken, or I could correctly notice they were bizarrely lying for some reason, etc.
So in general it is evidence. But not always. It is not absolute because it can be evidence, it cannot be proof. Matters such as these aren't knowable enough to be absolutely proven. And even evidence isn't certain.
EvF
What I think to be evidence and whether it's actually evidence or not are two different things.
And as Adrian says, as most people tend to give directions only when they know the truth, it usually is evidence, but not always. I could be mistaken, or I could correctly notice they were bizarrely lying for some reason, etc.
So in general it is evidence. But not always. It is not absolute because it can be evidence, it cannot be proof. Matters such as these aren't knowable enough to be absolutely proven. And even evidence isn't certain.
EvF