Ruth Kastner, PhD, is a member of the Foundations of Physics group at the University of Maryland, College Park. She is author of The Transactional Interpretation of Quantum Mechanics: The Reality of Possibility, Understanding Our Unseen Reality: Solving Quantum Riddles, and Adventures in Quantumland: Exploring Our Unseen Reality.

Ruth Kastner, PhD, is a member of the Foundations of Physics group at the University of Maryland, College Park. She is author of The Transactional Interpretation of Quantum Mechanics: The Reality of Possibility, Understanding Our Unseen Reality: Solving Quantum Riddles, and Adventures in Quantumland: Exploring Our Unseen Reality.