Not crazy at all. I've already posted a desire for similar functionality, though my use case is the kitchen. Imagine Alexa controlling a screen. You have your hands in a mix of ground turkey with onions and island soyvlaki sauce, making burgers, and you're looking at the recipe on the screen. You need to scroll down to the next part of the recipe, without getting ground turkey all over your tablet: "Alexa, scroll down." You want to see the picture of how to wrap the phyllo dough around the accompanying asparagus: "Alexa, zoom in".