Your answer depends on where you're from. In the late 1800s, German psychiatrist Franz M端ller-Lyer designed one of the world's most famous visual illusions. Which of the following two vertical lines above is longer?
If you're like almost everyone whom M端ller-Lyer tested, Line B will appear longer than Line A. In fact, the two lines are identical in length. But not everyone sees that. It all depends where you're from.