Most Tarot readers would rider waite to do it. I Ching readers roll with the flow. Numerologists figure the odds. Cartomancists flip when they do it.
Astrologists do it on the cusp.
Palmists take it hands down. Chiromancists do it with drips. Deja Vu's just think they did it. Rune readers do it where the stones grow. Paranormalists aren't sure how to do it and are contacting Art Bell on the mothership now.