Expert witnesses are frequently used by attorneys to establish essential elements of their case in chief. Yet an expert’s testimony can be invaluable at other points in the trial as well, such as during rebuttal.
Rebuttal expert witnesses are most commonly used in cases in which one side must offer an alternative explanation for the opposing party’s view of the facts in order to persuade the jury to take their view. Often, the need for them appears during discovery: One party discloses their expert, the opposing party makes a Daubert or summary judgment motion arguing that the expert is deficient, and the first party seeks an additional expert disclosure – aka a “rebuttal” expert.
Without the help of the rebuttal expert, one side may be limited merely to saying “no, you’re wrong,” without being able to offer any explanation as to why the opposing party is wrong or what alternate situation might explain the facts instead.
However, Crash Tech will NEVER engage in bad-mouthing another expert and will not "nitpick" a report. Rebuttal reports will be authored to explain where and why the other investigator's interpretation of the evidence may have been inaccurate.