It is used, for example, in the Rare Earth hypothesis to state that a planet must neither be too far away from, nor too close to the Sun to support life, while either extreme would result in a planet incapable of supporting life.
A planet must neither be too far away from, nor too close to the Sun to support life. This was for example. Either extreme would result in a planet incapable of supporting life. This was for example. This is used in the Rare Earth hypothesis to state.