Randall Ruenger’s request for disability benefits from the Social Security Administration stumbled on the fifth step of the required analysis when an Administrative Law Judge accepted the testimony of a vocational expert who — somehow stitching statistics together from several disparate sources — concluded that a substantial number of jobs are available that Ruenger could perform despite his infirmities.Reversing, with a per curiam decision and a separate concurrence from Circuit Judge Michael Y. Scudder, …