906.02 Lack of personal knowledge.
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/wi/chapter-906/906-02-4A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
906.02 Lack of personal knowledge. A witness may not testify to a matter unless evidence is introduced sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may, but need not, consist of the testimony of the witness. This rule is subject to the provisions of s. 907.03 relating to opinion testimony by expert witnesses.