Gaslighting by definition

Gaslighting or gas-lighting is a form of mental abuse in which a victim is manipulated into doubting their own memoryperception, and sanity.[1][2] Instances may range from the denial by an abuser that previous abusive incidents ever occurred, up to the staging of bizarre events by the abuser with the intention of disorienting the victim.

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This methodology should be dated quite old, as the same kind of plot was actually written in the book “Les reveries promeneur solitaire” by J.J. Rousseau.