What does it take to make a really great UI? Carl and Richard talk to Mark Miller about his latest work on helping people build the best possible UI. Mark has developed an amazing course teaching all of the details of making a great UI, directly connecting it to how humans see, perceive and interact with technology. Color, contrast, hue and intensity all affect perception of information on the screen, and Mark has organized every bit of it with awesome examples to help you make a really great UI. Check it out!