In this third and last installment of our three-part series examining the type of deposition questioning that can derail your opponent’s expert and set up a successful Daubert challenge, we will look at Daubert’s insistence that the expert’s opinions be based on “reliable methodology” before opinions can be presented to the jury.
What exactly does a reliable methodology under Daubert mean? Essentially, it requires that the expert’s opinions be based on information gathered in the same manner as a scientist would undertake before he or she reaches a conclusion about the design of the product at issue. The distinction is between using sound scientific procedures as opposed to unsupported speculation to develop a hypothesis, analyze and test against it, and reach a conclusion.
In the first part of this series, we examined how effective deposition questioning about an expert’s education, training and experience can ultimately call into serious question the expert’s qualifications to serve as an expert witness at trial and survive a subsequent Daubert motion. We examined how some experts, despite their seemingly extensive and impressive credentials, may actually have no experience in the relevant field or may be exaggerating the depth of their past work experience. This may ultimately lead to the Court finding that the expert is offering opinions in an area about which they know nothing.