During trial as part of P's cross-examination, D introduced a statement made by P nine days after the accident. The statement exonerated D from liability as a reckless driver. This was contrary to P's testimony at trial. P testified that a stranger had interviewed him at the hospital while he was under the influence of opiates and that he didn't remember what he told the stranger or what the stranger wrote and that it was not read to him. The court told the jury that the statement should only be considered as bearing on the credibility of P as a witness and not as proving any substantive fact. D objected, and the verdict went to P. D appealed.