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"LAUNCHING MISSILES (click here very quickly to undo)..."

• d0mine 16y ago
  "cancel" and "undo" is not the same thing. You can cancel the launch. But you can't undo it. It is thermodynamically impossible.
  • phillco 16y ago
    Right. But that's how Gmail is marketing it. "Undo send" gives you the impression that Gmail is reaching through the tubes and yanking your message back for you, but in reality it's just cancelling a launch that didn't happen yet.
  • jpitz 16y ago
    Yes, but there's a compensating transaction you can apply to the missile up until the time it reaches the target.