So just how logical are you? This 4-card selection task developed by Peter Wason in 1963 will help you find out! All you need to do is assess which of the 4 cards must be turned over in order to determine whether the rule has been followed. Music: "Brittle Rille" by Kevin MacLeod (incompetech.com) incompetech.com/music/royalty-free/ Music licensed under Creative Commons (creativecommons.org/licenses/by/3.0/) Sunrise footage by Beachfront B-Roll (www.beachfrontbroll.com/) (www.youtube.com/user/Beachfrontprod) (Image credits coming soon)