Optics principles. For example, the Ames room, Hering, Müller-Lyer, Orbison, Ponzo, Sander, and Wundt illusions all rely on the suggestion of the appearance of distance by using converging and diverging lines, in the same way that parallel light rays (or indeed any set of parallel lines) appear to converge at a vanishing point at infinity in two-dimensionally rendered images with artistic perspective. This suggestion is also responsible for the famous moon illusion where the moon, despite having essentially the same angular size, appears much larger near the horizon than it does at zenith. This illusion so confounded Ptolemy that he incorrectly
(Get to) The Point (Get to) The Point (Get to) The Point is a short-lived current events discussion television program that aired on CNN in April 2013. Initially billed by CNN as "a week of special programming", the program was hosted by advertising executive and television personality Donny Deutsch with a panel that consisted of political commentator and gay rights activist Margaret Hoover, ESPN columnist Rick Reilly and ESPN NFL analyst Jason Taylor. A fifth panelist slot was filled by a different person each day. "(Get to) The Point" attracted a great deal of ridicule on Twitter during its time on air. Also during