What if that friend lived in the woods and you had seen he had a 'pet' bear before?
Or what about another seemingly absurd claim, that to turn left when racing a motorbike you lean left and turn the wheel RIGHT? This one is actualy fairly well known now, but what if you had heard it in the very early days of racing, before TV or even movie recordings of races?
There is something we trust all the time in place of evidence, it is authority, the report of a reliable source.
And sometimes a not so reliable source. Lets say I'm a commander of an army and a wild eyed sheperd comes running in claiming a huge enemy force is a couple of miles away. I would believe there is a force. Since he is a sheperd huis livelyhood depends in part on knowing where he is. I would trust his accuracy as to where the force was. I would not be as trusting as to the size and makeup of the force. I'd send out my own scouts, not becasue I disbelieve, but becaseu I need more details.
And that touches on a very interesting point. In large part we trust authority becaseu we CAN check. Not that we do, but that we can. And sometime we do check. An unreliable authority will soon be known as such.
But can we check the claims of Christians or other faiths regarding their God(s)? It seems not.