...of collateral statements of a self-serving character. For example, in the statement "John and I robbed the bank," the words "John and" are neutral (save for the possibility of conspiracy charges). On...the other hand, the statement "John, not I, shot the bank teller" is to some extent self-serving and therefore might be inadmissible. See C. McCormick, Law of Evidence § 256, pp. 552-553 (1954) (hereinafter McCormick). Professor Jefferson took the narrowest approach, arguing that the reliability of a statement against...suggests that not all collateral statements are admissible. The Note refers, for example, to McCormick's treatise, not to Wigmore's, for guidance as to the "balancing of self-serving against dis[serving] aspects of a declaration." 28 U.S.C. App., p. 790. As noted supra, at 611-612, Wigmore's approach would allow the admission of "every fact contained in the same statement," but...