Although Federal Rule of Evidence 410 limits the use of plea offers, plea negotiations, withdrawn pleas, and pleas of nolo contendere, if part of a plea discussion has been introduced in a proceeding relating to a plea, another part of the plea discussion is admissible to put the admitted portion of the discussion in a fair context.

United States v. Ruiz, 249 F.3d 643, 646-647 (7th Cir. 2001) (upholding trial court's admission of police officer's testimony about his partner's statements [concerning defendant's appearance and clothing, his conduct on....Federal Rule of Evidence 803(1) and comparable State rules create a hearsay exception for a statement setting forth the declarant's perception of an event or condition at the time the declarant makes the statement or immediately thereafter.

United States v. Larson, 112 F.3d 600, 605 (2d Cir. 1997) (upholding trial court's admission of witness's testimony about accused's prior criminal sexual conduct with another minor because it was relevant as there was similarity of the events between the prior criminal sexual conduct and the offense...Federal Rule of Evidence 414 and comparable rules in a few States create an exception to the prohibition against "circumstantial" use of character -- the prohibition against the use of character to show conduct -- by providing that in a criminal trial for child molestation or child sexual abuse, evidence of the defendant's commission of another offense or offenses of child molestation or child sexual abuse is relevant and admissible.

Nix v. Whiteside, 475 U.S. 157, 166 (1986) ("the very nature of a trial [is] a search for truth").Although factors and purposes other factfinding and accurate factfinding influence and constrain proof and the law of evidence, factfinding and accurate factfinding are essential purposes of the process of proof and the law of evidence; without these last two purposes, the process of proof and the law of evidence would not exist in a recognizable form.