Try something fun.
1. To start, click the right hand arrow key.
2. To view the slide show in full screen mode, hit the toggle icon at the bottom of the slide show, which is the very last icon on the bottom right of the slides.
3. Follow the instructions of David Copperfield.
4. Look at the cards carefully. Select one and remember the card you selected.
5. Look again, David Copperfield will make it disappear.