Twenty minutes into Searching, after David Kim (John Cho) goes to bed, the screen goes dark. Then, suddenly, there’s a burst of color, as ribbons of light dance across the frame. It’s a screen saver, one anyone who’s ever used a Mac might be quite familiar with, and it’s a perfect model of tranquility until a notification starts flashing in the corner. David is getting a FaceTime call from his daughter Margot (Michelle La), followed by another, then another. He misses them all, and when he wakes