Article VII: Opinions and Expert Testimony Article VII: Opinions and Expert Testimony This article contains the following rules: Rule 701: Opinion Testimony by Lay Witnesses Rule 702: Testimony by Expert Witnesses Rule 703: Bases of an Expert's Opinion Testimony Rule 704: Opinion on an Ultimate Issue Rule 705: Disclosing the Underlying Facts or Data and Examining an Expert About Them Rule 706: Audit in Civil Cases