You've probably read "You won't believe your eyes" on a link to some disappointing article. But this isn't one of those. Destin Sandlin from the Smarter Every Day YouTube channel got to thinking our eyes trick us sometimes. It turns out our eyes aren't just little cameras attached to a hard drive (our brain). Instead vision is something much more complicated.

As a bonus you'll get to see a cool LED device made by a guy named Greg.