Trick on mental powers
There are two ways to look at this demonstration. One point of view is that you select the card that you feel or predict will disappear in the future. The other way of thinking about it is that you pick a card that you will mentally force to disappear. In either case, it will appear that you are using psychic powers.
Let's try the demonstration again:
Look at the cards arranged below.
Mentally select a card. (Don't forget it!)
When you have the card in mind, click here.