"The prophecy was unambiguous and immutable."
"No weapon forged on Earth could defeat the Lord Baarthus"
"And yet here we are, you telling me, Lord Baarthus was struck down by the Peasant King. Wielding... just a regular sword. Forged on Earth."
"I know what I saw, okay! The Peasant King walked up to him, shoved the sword in his neck, and then just kept going. It was nasty!"
"Okay, okay, fine. Clearly what's happened here is there's some kind of loophole in the prophecy that enabled this. Happens all the time. No weapon forged on Earth... How sure are you that sword is of this world?"
"What do you take me for? I've done my research. Even tracked down, interviewed the original blacksmith."
"There must be something. Prophecies can't be wrong!"
"I mean... I didn't take stock of her inventory. If it was one of those meteorite swords..."
"No, no. The prophecy didn't say 'No weapon with parts sourced on Earth'. It was pretty specific about the Forging."
"I don't hear anything better coming from you!"
"How about this. What if it wasn't a weapon? The Peasant King... it'd only be fitting for him to slay the Dark Lord with a blade meant for peasantry! Not a weapon, but a farming tool, like a scythe, or a really long trowel--!"
"A long trowel?? It looked like a damn sword!"
"That doesn't mean anything! A ritzy, college-educated diviner like you, you wouldn't know a trowel from a ploughshare!"
"It had a hilt, and a pommel, and it went in a scabbard-- come on! Even if it was some kind of-- newfangled grass cutter I've never heard of, it was used as a weapon, and it was forged to be a weapon! I've seen the ledgers!"
"Clearly you screwed something up, madam, because the Lord Baarthus just got sliced up like an old dairy cow and the prophecy very clearly specifies the only instrument that could bring his end is--!! Oh. Ohhh. Oh, gods damn it."
"Fucking... 'forged on earth'."
"It wasn't forged on earth. It was forged on a fucking anvil."
"What? No, you're-- you're joking. That wouldn't-- that couldn't-- what weapon would be forged on earth, by that definition!!?"
"I hate prophecies so much..."