 That's why we need to coat these cathodes with something that can blink on and turn off. When the electrons light up, the phosphorescent dots on the receiving end, your brain can assemble all that into a steady picture because of how the vision persists. What's that? I told you, persistence of vision is just... No, no, no, that. What's what? That line. That break in the glass supposed to be there? There's a crack. Well, that's what I was... I heard you now. Oh, Ruby. It's worthless. Hey, don't do that.