Studies of \"near-death experiences\" show that such experiences not only provide a new certainty of post-mortem survival, but often function as a call for fundamental change in the present. Reported aftereffects encompass changes in attitudes, beliefs, and life orientation. It is said that \"experiencers\" have lost their fear of death, found their purpose in life, or become \"more spiritual.\" The experience - often declared to be indescribable, inexplicable, or ineffable - is held by many to be the most important of their lives and, moreover, the best proof available for matters \"transcendent.\"