A set of cards used in ESP testing such as Zener cards. A subject tries to determine or “guesses” the symbol on card being viewed by a tester or predicts the next card and each card appears a fixed number of times. Statistical analysis of tests run using a closed deck uses different protocols than testing using an open deck. (See “Open Deck.”)
Readers, please enjoy this guest blog post by Rick de Yampert, author of the new Crows and Ravens.
I was gobsmacked the time I looked out my living room window at the woods behind my Palm Coast, Florida, home and saw a crow hanging upside-down in...