1. Choose two puzzles or illusions you viewed and briefly describe them in your discussion board post. (Note: If the same two have already been frequently described by other students in the discussion board forum, consider selecting different ones.)

2. Based on knowledge gained from the lesson, textbook, and website, provide an explanation as to why these illusions ‘fool’ our brains.  Please integrate information from the lesson and textbook to support your comments. Include citations and references where appropriate.