Takuji Tsuzuki (1928–2002) was a Japanese physicist and science writer born in Hamamatsu. He taught at Yokohama City University and became a professor emeritus there. Through numerous books, particularly in Kodansha’s Blue Backs series, he introduced general readers to the ideas and puzzles of modern physics. Using perpetual motion and the apparent reversal of time as starting points, “Makkusuweru no Akuma: Kakuritsu kara Butsurigaku e” explores Maxwell’s demon and the connection between probability and physical laws. The imagined being that sorts molecules provides a way to explain entropy and the second law of thermodynamics, linking everyday observations with molecular motion and statistical reasoning. Investigating time travel and its implications for cause and effect, “Time Machine no Hanashi: Chokosoku Ryushi to Meta Sota iron” discusses hypothetical faster-than-light particles known as tachyons and questions arising from relativity. Tsuzuki used stories, thought experiments and familiar puzzles to develop ideas that might otherwise seem accessible only through mathematics. His books invite readers to examine why physical processes take the forms they do, how scientific explanations challenge everyday intuition, and what happens when a seemingly simple question is pursued to its theoretical limits.
