Inferences based on inferences are permissible

Newton v. Ryder Transportation Services, Inc., 206 F.3d 772, 775 (8th Cir. 2000) (holding, in plaintiff driver's negligence action against defendant truck leasing company, that the contents of the accident report were admissible because the....Federal Rule of Evidence 803(5) or a comparable State rule creates a hearsay exception for a memorandum or record concerning a matter about which a witness once had knowledge but now has insufficient recollection to enable the witness to testify fully and accurately, shown to have been made or adopted by the witness when the matter was fresh in the witness' memory and to reflect that knowledge correctly.

Washington v. Texas, 388 U.S. 14, pin? (1967) (state rule barring accomplice from testifying for accused accomplice held unconstitutional).A non-constitutional rule of evidence specifying when a person is or is not a competent witness cannot override a federal constitutional right to have a potential witness testify.

United States v. Flanagan, 34 F.3d 949, 954-955 (10th Cir. 1994) (upholding the trial court's ruling that allowed the "salesman's salesman" testimony which referred only to the accused's success as a salesman; held, "testimony did not constitute a reference to accused's good character so as to put his...If a criminal defendant offers evidence of his or her character circumstantially - to show he or she did not commit the crime charged -- the prosecution can offer rebutting evidence of defendant's character.