Utiliser "obviates" dans une phrase

1. Amends obviates punishment and truly “makes up for”

2. There is, however, one great example to the contrary—which, although only an argument ad hominem, obviates his objection

3. A useful and graciously austere half-light which dissipates puerile fears and obviates falls

4. This obviates the need to compensate for Spectral Dilation of the cycle amplitude as a function of the cycle period