Old Ned recalls the time fifty years ago when his young friend Pete LeFranc set off for the future despite Ned’s warning that time travel can lead to nothing but paradoxes. And, asks Ned (anticipating Hawking), if time travel were so easy, then where are all the time travelers from the future?
If yours works, there’ll be more time machines built. With more built, they’ll be improved. They’ll get to be commonplace. People’d use them—and someone would turn up here with one. Or in the past. Why haven’t we met time travelers, Pete?

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  1. “Absolutely No Paradox” by Lester del Rey, in Science Fiction Quarterly, May 1951.
    2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Lester del Rey