The first indication that something was changing was the sound of ragtime music suddenly playing from somewhere. "Do you hear that?" Jack asked. Or, at least, he tried to. No sound had come out of his mouth. He moved his hands to his throat, attempting to clear it. Still no sound. Pat, mystified at this development, made an overly-exaggerated show of puzzlement before clapping his hands. The silence persisted. No matter how many noises the two tried to make - clapping, stomping, snapping, etc. - there was still no sound; no sound except the Scott Joplin that seemed to come from air itself. "This is weird," Jack tried to say.
This time, however, something different happened. There still wasn't any noise, but the two boys could see white text in front of their eyes that said "JACK: This is weird," before it disappeared. A surprised look crossed both of their faces. Pat noiselessly flapped his gums. Text appeared again, but only this time it said "PAT: Holy crap! Did you see that?!" Jack nodded emphatically. The two kept the noiseless conversation going, text appearing in their line of vision all the while.
JACK: Yeah, I did. This is crazy.
PAT: You ain't kidding. You suppose this is the side effect?
Jack shrugged.
JACK: I mean, what else could it be?
PAT: Hmm...good point. What do you think happened?
Jack made a show of thought
JACK: Well, everything's black and white, there's ragtime music coming from seemingly nowhere, and nothing's making any sound...
PAT: In short...the world's become a silent movie?
JACK: That certainly seems the likeliest possibility.
Pat swivels his head toward his computer and then back to his friend.
PAT: Jesus...talk about a random change.
Jack shrugged again
JACK: I mean, it's kinda related. Silent movies were black and white
PAT: That's true