A method and apparatus for indicating an inconsistency. The first pocket sheet may include a first pocket with a first opening along the traverse edge of the mounting sheet, and first pocket sheet may include a second pocket with the second opening along the traverse edge of the mounting sheet. The shoulder turn regulator can connect between the shoulder harness and an upper end of the torsion bar, and can resist rotation of the shoulders of the wearer of the golf swing training aid beyond a threshold shoulder rotation amount during a backswing motion of the wearer. The hydrogen peroxide-quenching material contacts the calibration liquid. Methods and compositions for introducing RNAs into cells, using RNAs covalently associated with protein transduction domains andor lipids, are provided.