Contents (view Concise Listing)

• xiii • Preface (As Tomorrow Becomes Today) • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 1 • Introduction (As Tomorrow Becomes Today) • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 6 • Time Travel • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 8 • Backtracked • (1968) • short story by Burt K. Filer [as by Burt Filer]
• 13 • "All You Zombies ..." • (1959) • short story by Robert A. Heinlein
• 24 • The Men Who Murdered Mohammed • (1958) • short story by Alfred Bester
• 35 • Parallel Worlds • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 37 • Random Quest • (1961) • novelette by John Wyndham
• 68 • Thus We Frustrate Charlemagne • [Institute for Impure Science] • (1967) • short story by R. A. Lafferty
• 78 • The Monster from Nowhere • (1939) • short story by Nelson S. Bond
• 93 • Mind Stretchers • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 95 • The New Reality • (1950) • novelette by Charles L. Harness
• 127 • No-Sided Professor • [Dr. Stanislav Slapernarski • 1] • (1947) • short story by Martin Gardner
• 136 •
  "—And He Built a Crooked House"^?"-And He Built a Crooked House"
  • (1941) • novelette by Robert A. Heinlein
• 155 • Education • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 157 • The Fun They Had • juvenile • (1951) • short story by Isaac Asimov
• 160 • Primary Education of the Camiroi • [Camiroi] • (1966) • short story by R. A. Lafferty
• 170 • HEMEAC • (1968) • short story by E. G. Von Wald
• 184 • World War III • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 186 • A Boy and His Dog • [Vic and Blood • 2] • (1969) • novella by Harlan Ellison
• 186 • Personal • (1966) • short story by Tuli Kupferberg
• 220 • Robots • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 222 • Runaround • [Mike Donovan] • (1942) • novelette by Isaac Asimov
• 237 • Calling Dr. Clockwork • (1965) • short story by Ron Goulart
• 245 • Masks • (1968) • short story by Damon Knight
• 255 • Man: Himself and Aliens • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 257 • Specialist • (1953) • short story by Robert Sheckley
• 271 • The Sentinel • [A Space Odyssey] • (1951) • short story by Arthur C. Clarke
• 279 • The Game of Rat and Dragon • [The Instrumentality of Mankind] • (1955) • short story by Cordwainer Smith
• 292 • The Decision Makers • [Conscience Interplanetary] • (1965) • novelette by Joseph Green
• 311 • A Death in the House • (1959) • novelette by Clifford D. Simak
• 327 • Technology • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 329 • Build-Up • (1957) • short story by J. G. Ballard
• 346 • Plenitude • (1959) • short story by Will Mohler [as by Will Worthington]
• 357 • The Wizards of Pung's Corners • [Jack Tighe] • (1958) • novelette by Frederik Pohl
• 381 • "Repent, Harlequin!" Said the Ticktockman • (1965) • short story by Harlan Ellison
• 392 • Population • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 394 • Nine Lives • (1969) • novelette by Ursula K. Le Guin
• 416 • Golden Acres • (1967) • novelette by Kit Reed
• 432 • Population Implosion • (1967) • novelette by Andrew J. Offutt
• 445 • The Tunnel Ahead • (1961) • short story by Alice Glaser
• 453 • Afterword (As Tomorrow Becomes Today) • essay by C. W. Sullivan, III [as by Charles Wm. Sullivan, III]
• 454 • Bibliography (As Tomorrow Becomes Today) • essay by uncredited