( Jun will show you a video about illusion. He was devising for a hour, and he found a good illusion video. Watch it! )
All illusions i know is Penzro's Triangle, 3D in paper, and many more illusions. Illusion can confuse our brains and make us think, " How can that happen??! " or, " Thats not possible!! " Yes, many of illusions are unbelieveable. Some times, we feels I must do that and show that to friends. But, be careful that some illusion magic are not allow to do it at home, or schools!
