Cheryl Ladd plays Louise Baltimore opposite Kris Kristopherson’s Bill Smith in this movie
adaptation of
Varley’s novel (1983), although on-screen credit is given
only to his earlier short story “
Air Raid” (1977).
— Michael Main
For one thing, paradoxes can occur. Say you build a time machine, go backwards in time
and murder your father when he was ten years old. That means you were never born. And if
you were never born, how did you build the time machine? Paradox! It's the possibility of
wiping out your own existence that makes most people rule out time-travel. Still, why
not? If you were careful, you could do it.