You can convince your friends that they have psychic powers … until you tip the secret.  Here’s how to have some harmless fun with them: go to https://downloads.bbc.co.uk/bbcthree/psychic_card_trick/psychic_card_trick.swfand get the computer screen ready for her.  Have her follow all directions, including sitting 6 feet from the screen.  This will mandate your having to control the mouse and click the screen.  Every time she gives an answer to the “image” she believes she is receiving from the scientists on the screen, you can prompt the video to play the “correct” answer just by clicking on the “click to play” icon in the correct spot.  Follow the directions, below, and have fun.