I love this trick.
Magicians routinely ask the ‘desert island’ question – What one trick would you want to stranded on a desert island with?
This trick is so simple in presentation – one card turns over. This trick is so simple in props – only two cards. And this trick has actually led to a few jobs (I do it with business card as well)
BTW – I’ll come to your office and do it for you and your people!