Is the universe just a simulation? Not really sure...

I was on a Chambers post where a guy claimed he talked to Elon Musk. He said Elon said he thought 99% of us were just NPCs in a game. He said that he is 100% sure he is a NPC too.<br><br>I'm not sure if I am an NPC. The other day I saw a kid at Walmart. I said "Hi, how's it going?" I had every intention to be friendly. The kid just looked at me and said "Oh, I'm not the one talking. I'm not allowed to respond." Then he walked away. I have no idea if this kid was just a weirdo or a NPC.