90.604 Lack of personal knowledge.—Except as otherwise provided in s. 90.702, a witness may not testify to a matter unless evidence is introduced which is sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may be given by the witness’s own testimony.History.—s. 1, ch. 76-237; s. 1, ch. 77-77; s. 22, ch. 78-361; s. 1, ch. 78-379; s. 483, ch. 95-147.