It was like the 1700s I think, but some guy's wife said that their house's gas lights go off at random, and nobody believed her and the guy eventually convinced his wife she was lying and going bonkers. Meanwhile, it was the guy switching off the gas, causing the lights to dim, playing his wife and making her out as crazy.
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So essentially, convincing someone that the truth they are speaking is actually a lie, by lying to them and others, whilst perpetuating the behaviour toward them that they are speaking out against, to the point where they don't even know if they can trust themselves anymore, and whether the thing that happens to them is even real or if they are just imaging it.
For example, person A is bullying person B and stealing their stuff, then person A makes person B and everyone else believe that that they would NEVER do such a thing, that it is all misunderstood, that person B is just making things up and being a mean person towards person A.
.
So essentially, convincing someone that the truth they are speaking is actually a lie, by lying to them and others, whilst perpetuating the behaviour toward them that they are speaking out against, to the point where they don't even know if they can trust themselves anymore, and whether the thing that happens to them is even real or if they are just imaging it.
For example, person A is bullying person B and stealing their stuff, then person A makes person B and everyone else believe that that they would NEVER do such a thing, that it is all misunderstood, that person B is just making things up and being a mean person towards person A.