In this review of 'Calculated Thoughts' by Doug Dyment, the focus is on a book that explores mentalism through magic squares, card stacks, and ESP cards. The ESP section is particularly praised for its fresh take on ESP cards, extending their use beyond traditional routines to include divination and readings. Aimed at intermediate performers, the book demands memorization and practice but rewards with a variety of fooling routines adaptable to any setting. Highlights include what the reviewer calls the best ESP theory they've seen, though some sections are critiqued for having too many variations and less clear explanations. Available as an ebook for $45 or a physical copy for $60 from Vanishing Inc., it's a solid pick with a score of 8.75/10.
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