Using "Negative Evidence" as a "Positive" Approach
Often, counsel must prove that a given event did not occur or that a particular sound was not made or heard. Where the attending circumstances show that it has probative force that it is relevant and material evidence proving that an event did not occur is admissible and may often have a devastating effect on the case. This is “negative evidence.”
Negative evidence is evidence that a fact did not exist or that a thing was not done, did not take place, or that a witness did not hear, see, feel, touch, taste, or smell. Many courts consider that negative evidence lacks the force of positive evidence, since the memory of a witness is considered more reliable when he testifies to something that occurred as opposed to something that did not. If this is true, it should go to the weight of the evidence and not to its admissibility.
Of course, negative evidence must be relevant that is, it must logically tend to prove or disprove a material fact. Where the evidence is logically probative, it is relevant and will be admissible unless there is a reason for not allowing the jury to consider it. In determining whether a fact has probative value, the fact for which the evidence is offered to prove or disprove must be identified. The same evidence can be relevant to one purpose and irrelevant or immaterial for another. If evidence is offered to prove or disprove a fact or circumstance which is not a matter in issue, it is said to be immaterial.
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