Trivia – Substitute for Love’s Fascinating Math

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No math whiz, Karin spent a long time studying the milestones of mathematics to create a realistic passion for Holly Markham in Substitute for Love. Her favorite fascinating fact was how measuring sound waves electronically replaced the whack of an engineer’s hammer against a train wheel to test for metal fatigue. File that under “Cool stuff writers hope some day will help them win Jeopardy!”