What are the three key principles in direction manipulation * 1 point Meaningful Visual Metaphors Rapid actions whose effects on the objects of interest are visible Touch Screen Devices Finger / Eye Tracking Physical Actions of labeled interfaces Where has a 3-D Printer been installed? * 1 point NASA Space Station Mars Rover Moon Base Alpha Why was the Nintendo Wii so successful (according to the book)? * 1 point No Syntax to remember 1080 Graphics Healthy Selection of Games