Use "inessential" in a sentence

1. For example, they have certain very inessential differences in nuances of feeling and thinking; but they affect the quality of a choice of “a personality” at the next moment of its manifestation

2. And as the moon rose higher the inessential houses began to melt away until gradually I became aware of the old island here that flowered once for

3. The robustness of the optimization space relative to small changes in values of the fixed parameters and to inessential alterations of the strategy structure is an important indicator of optimization reliability