The definition of insanity, a federal judge wrote Monday, “is doing the same thing over and over again and expecting a different result.”The Social Security Administration is providing evidence in support of that assertion, U.S. Magistrate Judge Iain D. Johnston contended.In a written opinion, he accused Social Security administrative law judges of making the same errors over and over again in considering claims for disability benefits.Claimants whose request for benefits are denied turn to the federal trial …