Optical Illusions - what you see is not what is

 To see is to believe. But sometimes even with eyes wide open, what we see may not be what is. Optical illusions can teach us the value of being cautious and avoiding the habit of jumping to conclusions which sometimes can lead to embarrassing situations.

Optical Illusion 1 - is the right man taller than the left man?

Optical Illusion 2 -Is the top line shorter or equal to the bottom line

Both examples taken from the book "Thinking Fast, Thinking Slow" by Daniel Kahneman.