Fail Safe is much more than a daring experiment in live television, though. The fact that the actors were working without a net, as it were, heightens the tension of the telecast in that the format didn’t allow for second takes. Stephen Frears, better known as a film director whose credits include The Grifters and The Queen, proves his prowess in the live medium here, despite a couple of insignificant glitches. But the real power of Fail Safe is in its ability to convey the very real threat of humankind’s inability to harness the forces it unleashes. In that regard, it’s as timeless as the story of Prometheus. It warns us that in our hands, the world will end not in a roar, but in a sadly whining whimper.