Taking some responsibility for your own health and well being in an age of 'national health' seemed a revolutionary concept.

At one time, that may have been a revolutionary concept.

Perhaps the greatest breakthrough was the revolutionary concept of breakfast served all day.

This was a revolutionary concept that turned convention on its head.

The plans incorporate several revolutionary new concepts which, for obvious reasons, must be kept top secret.

By 1973, he had come up with a revolutionary concept in hearing aid design.

It was based on what was then a revolutionary concept.

We developed a revolutionary concept of our own in recent years that ideas should be free and public.

If you're trying to develop trade in the underprivileged world, understand that teaching people to buy anything for the first time is a revolutionary concept.

This may not be the most revolutionary concept ever considered on the American stage.