21:22 I could see a really goofy, like, storyline where, I don't know, he has to, like, analog hack into, like, a door lock, and the vector display is displaying like some strange image and he has to turn potentiometers until it becomes a circle, and when it's finally like a perfect circle, the door unlocks or something like that. That would be pretty cool. And that's like, I don't know. That's 2 waves that he's getting in the right orientation and phase and whatnot.
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