  It is no doubt quite difficult to believe that karma and rebirth exist in the form that the Buddha claims. It is said that their existence can be confirmed by those who have developed the power of retrocognition through advanced yogic technique. But this is of little help to those not already convinced that meditation is a reliable means of knowledge. What can be said with some assurance is that karma and rebirth are not inconsistent with non-self. Rebirth without transmigration is logically possible.