Answers the question: how can we validate the existence of spiritual realities - specifically, the higher levels of mystical experience claimed by the world's wisdom traditions - in the face of attacks that deny those realities as unscientific or reduce them to social constructions?

Answers the question: how can we validate the existence of spiritual realities - specifically, the higher levels of mystical experience claimed by the world's wisdom traditions - in the face of attacks that deny those realities as unscientific or reduce them to social constructions?