29 time travel 316 Tokyo University 13 Tolstoy, Leo 129 Index 417 War and Peace 129 toothed gears 43 Top Gear 97 topology 249 tortoise and hare 154 Torvalds, Linus 232, 265 totality problem 250 Tower of London 42 Transmission Control Protocol 267 traveling salesman problem 166 triple drug therapy 158 trut