Inertia negation

Inertia negation is a hypothetical process causing physical objects with mass to act as if they were of lower mass or were massless. The effect is the opposite of adding ballast. No such process is known to exist in the real world; if our present understanding of physics is correct, such a process is in fact impossible. There is currently no known material or technology that is able to eliminate or negate the effects of inertia that all known types of mass possess.