(a) Permitted Uses. The court may allow a party to present an illustrative aid to help the trier of fact understand the evidence or argument if the aid's utility in assisting comprehension is not substantially outweigh by the danger of unfair prejudice, confusing the issues, misleading the jury, undue delay, or wasting time.
(b) Use in Jury Deliberations. An illustrative aid is not evidence and must not be provided to the jury during deliberations unless:
(1) all parties consent; or
(2) the court, for good cause, orders otherwise.
(c) Record. When practicable, an illustrative aid used at trial must be entered into the record.
(d) Summaries of Voluminous Materials Admitted as Evidence. A summary, chart, or calculation admitted as evidence to prove the content of voluminous admissible evidence is governed by Rule 1006.
Committee Notes on Rules—2024
The amendment establishes a new Rule 107 to provide standards for the use of illustrative aids. The new rule is derived from Maine Rule of Evidence 616. The term “illustrative aid” is used instead of the term “demonstrative evidence,” as that latter term has been subject to differing
interpretation in the courts. An illustrative aid is any presentation offered not as evidence but rather to assist the trier of fact in understanding evidence or argument. “Demonstrative evidence” is a term better applied to substantive evidence offered to prove, by demonstration, a
disputed fact.
Writings, objects, charts, or other presentations that are used during the trial to provide information to the trier of fact thus fall into two categories. The first category is evidence that is offered to prove a disputed fact;
admissibility of such evidence is dependent upon satisfying the strictures of Rule 403, the hearsay rule, and other evidentiary screens. Usually the jury is permitted to take this substantive evidence to the jury room during deliberations and use it to help determine the disputed facts.
The second category—the category covered by this rule—is information offered for the narrow purpose of
helping the trier of fact to understand what is being communicated to them by the witness or party presenting
evidence or argument. Examples may include drawings, photos, diagrams, video depictions, charts, graphs, and computer simulations. These kinds of presentations, referred to in this rule as “illustrative aids,” have also been described as “pedagogical devices” and sometimes (and less helpfully) “demonstrative presentations”—that latter term being unhelpful because the purpose for presenting the information is not to “demonstrate” how an event occurred but rather to help the trier of fact understand evidence or argument that is
being or has been presented.
A similar distinction must be drawn between a summary of voluminous admissible evidence offered to prove a fact, and a summary of evidence that is offered solely to assist the trier of fact in understanding the evidence. The former is subject to the strictures of Rule 1006. The latter is an illustrative aid, which the courts have previously regulated pursuant to the broad standards of Rule 611(a), and which is now to be regulated by the more particularized requirements of this Rule 107.
While an illustrative aid is by definition not offered to prove a fact in dispute, this does not mean that it is free from regulation by the court. It is possible that the illustrative aid may be prepared to distort or oversimplify the evidence presented, or stoke unfair prejudice. This rule requires the court to assess the value of the illustrative aid in assisting the trier of fact to understand the evidence or argument. Cf. Fed. R. Evid. 703; see Adv. Comm. Note to the 2000 amendment to Rule 703. Against that beneficial effect, the court must weigh most of the dangers that courts take into account in balancing evidence offered to prove a fact under Rule 403—one particular problem being that the illustrative aid might appear to be substantive evidence of a disputed event. If those dangers substantially outweigh the value of the aid in assisting the trier of fact, the trial court should prohibit the use of—or order the modification of—the illustrative aid. And if the court does allow the aid to be presented at a jury trial, the adverse party may ask to have the jury instructed about the limited purpose for which the illustrative aid may be used. Cf. Rule 105.
The intent of the rule is to clarify the distinction between substantive evidence and illustrative aids, and to provide the court with a balancing test specifically directed toward the use of illustrative aids. Illustrative aids can be critically important in helping the trier of fact understand the evidence or argument.
Many courts require advance disclosure of illustrative aids, as a means of safeguarding and regulating their use. Ordinary discovery procedures concentrate on the evidence that will be presented at trial, so illustrative aids are not usually subject to discovery. Their sudden appearance may not give sufficient opportunity for analysis by other parties, particularly if they are complex. That said, there is a wide variety of illustrative aids, and a wide variety of circumstances under which they might be used. In addition, in some cases, advance disclosure may improperly preview witness examination or attorney argument. The amendment therefore leaves it to trial judges to decide whether, when, and how to require advance notice of an illustrative aid.
Because an illustrative aid is not offered to prove a fact in dispute and is used only in accompaniment with presentation of evidence or argument, the amendment provides that illustrative aids are not to go to the jury room unless all parties consent or the court, for good cause, orders otherwise. The Committee determined that allowing the jury to use the aid in deliberations, free of the constraint of accompaniment with witness testimony or party presentation, runs the risk that the jury may unduly emphasize the testimony of a witness with whom it was used, or otherwise misinterpret the import, usefulness, and purpose of the illustrative aid. But the Committee concluded that trial courts should have some discretion to allow the jury
to consider an illustrative aid during deliberations.
If the court does allow the jury to review the illustrative aid during deliberations, the court must upon request instruct the jury that the illustrative aid is not evidence and cannot be considered as proof of any fact. This rule is intended to govern the use of an illustrative aid at any point in the trial, including in opening statement and closing argument.
While an illustrative aid is not evidence, if it is used at trial it must be marked as an exhibit and made part of the record, unless that is impracticable under the circumstances.