50
The Ultimate in Communication

If it is the ultimate in communication we are seeking, we already have it, in one sense at least. Indeed, we attained it over a century and a quarter ago.

In 1844, the first telegraph line was put up between Baltimore and Washington, and across the wires winged the first message, "What hath God wrought?" At that moment, information was transferred at the speed of light, 186,282 miles per second, over a sizable distance.

This speed of information transfer has not been exceeded since and, physicists are quite certain, can never be exceeded. What we have done since has been to add refinements.

The telegraph sent messages in code, but the telephone, invented in 1876, transmitted actual words. Both telegraph and telephone extended themselves in space over uncounted thousands of miles of wire and cable. Radio, however, in the 1890s, transmitted information on electromagnetic waves alone, doing away with the necessity of wires (hence, the "wireless" as it is much more appropriately called in Great Britain).

Radio transmitted only code at first, but by 1906 it was transmitting words and music. Television, going commercial in 1947, added visual information, so that we got images as well as sound; and ten years later, color was added to the images.

Now television rules the world, transmitting sound and full-color image at the speed of light.

What can we possibly add to that?

To answer that question, we have to understand some of the shortcomings of ordinary television. The electromagnetic wave bands used for ordinary commercial television have room for relatively few channels. Then, too, the

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The Roving Mind
Table of contents

Table of contents

  • The Roving Mind *
  • Contents vii
  • Foreword Isaac Asimov: Science Popularizer, Skeptic, and Rationalist xi
  • A Celebration of Isaac Asimov — a Man for the Universe xv
  • Introduction 1
  • Part I the Religious Radicals *
  • 1: The Army of the Night *
  • 3: The Reagan Doctrine 20
  • 4: The Blind Who Would Lead 24
  • 5: Creeping Censorship 27
  • 6: Losing the Debate 29
  • Part II Other Aberrations 30
  • 7: The Harvest of Intelligence *
  • 8: That Old-Time Violence 37
  • 9: Little Green Men or Not? 40
  • 10: Don'T You Believe? 43
  • 11: Open Mind? 47
  • 12: The Role of the Heretic 49
  • Part III Population *
  • 13: The Good Earth is Dying *
  • 14: The Price of Survival 66
  • 15: Letter to a Newborn Child 72
  • Part IV Science: Opinion 74
  • 16: Technophobia *
  • 17: What Have You Done for Us Lately? 84
  • 18: Speculation 88
  • 19: Is It Wise for Us to Contact Advanced Civilizations? 92
  • 20: Pure and Impure 97
  • 21: Do We Regulate Science? 104
  • 22: For Public Understanding of Science 107
  • 23: Science Corps 110
  • 24: Science and Beauty 113
  • 25: Art and Science 116
  • 26: The Fascination of Science 120
  • 27: Sherlock Holmes as Chemist 127
  • Part V Science: Explanation 132
  • 28: The Global Jigsaw *
  • 29: The Inconstant Sun 139
  • 30: The Sky of the Satellites 151
  • 31: The Surprises of Pluto 157
  • 32: Neutron Stars 160
  • 33: Black Holes 162
  • 34: Faster Than Light 165
  • 35: Hyperspace 169
  • 36: Beyond the Universe 175
  • 37: Life on Earth 183
  • Part VI the Future 188
  • 38: Transportation and the Future *
  • 39: The Corporation of the Future 200
  • 40: The Future of Collecting 208
  • 41: The Computerized World 214
  • 42: The Individualism to Come 228
  • 43: The Coming Age of Age 237
  • 44: The Decade of Decision 244
  • 45: Do You Want to Be Cloned? 251
  • 46: The Hotel of the Future 256
  • 47: The Future of Plants 262
  • 48: Bacterial Engineering 266
  • 49: Flying in Time to Come 272
  • 50: The Ultimate in Communication 278
  • 51: His Own Particular Drummer 285
  • 52: The Future of Exploration 295
  • 53: Homo Obsoletus? 300
  • 54: Volatiles for the Life on Luna 307
  • 55: Touring the Moon 312
  • 56: Life on a Space Settlement 317
  • 57: The Payoff in Space 324
  • Part VII Personal *
  • 58: I Am a Signpost *
  • 59: The Word-Processor and I 334
  • 60: A Question of Speed 337
  • 61: A Question of Spelling 340
  • 62: My Father 344
  • Acknowledgments 348
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