If you make it through this article without being fooled, you're sharper than any of us.
All over the Internet you can find confusing illusions, tricks and questions. Whether it is the color of a dress or the direction a train is moving, these "brain tricks" captivate people because they are usually so simple, but so undetectable until it is too late.
In the following numbered sections, we've laid out seven of our favorite videos about the brain. All but no. 5 will probably force you to replay the video, but only once you realize that you've been duped.
If, however, you make it through this gauntlet of mind tricks without being fooled, please be sure to let us know in the comments. Good luck!