Quote:
The girl types her number on the magician's phone
The magician types in a number and sends an sms message to the girl's phone
The magician asks the girl to guess the number
The girl's answer is 7
The magician asks her to open the message
The number is 7 indeed.
It's human nature for someone to choose the number 7 when you tell them to pick a number between 1 and 10. This is kind of like the ESP routine except you are taking her phone number in the process. The actual out come of the trick doesn't matter. It is the showmanship behind it.