"So anyway," a stout boy was saying, "I told Justin to hide up in our dormitory. I mean to say, if Potter's marked him down as his next victim, it's best if he keeps a low profile for a while. Of course, Justin's been waiting for something like this to happen ever since he let slip to Potter he was Muggle-born. Justin actually told him he'd been down for Eton. That's not the kind of thing you bandy about with Slytherin's heir on the loose, is it?
"You definitely think it is Potter, then, Ernie?" said a girl with blonde pigtails anxiously.
"Hannah," said the stout boy solemnly, "he's a Parselmouth. Everybody knows that's the mark of a Dark wizard. Have you ever heard of a decent one who could talk to snakes? They called Slytherin himself Serpent-tongue."
There was some heavy murmuring at this, and Ernie went on, "Remember what was written on the wall? Enemies of the Heir, Beware. Potter had some sort of run-in with Filch. Next thing we know, Filch's cat is attacked. That first year, Creevey, was annoying Potter at the Quidditch match, taking pictures of him while he was lying in the mud. Next thing we know – Creevey's been attacked." (11.136-139)
What do you think of Ernie's evidence here? Would you believe him, based
on this logic, if you didn't know that Harry is innocent? If the book
weren't from Harry's perspective, could Ernie's deductions sound right?
Why is Ernie so quick to believe that Harry Potter is the Heir of