In civil cases, police officers frequentlytestify as accident reconstruction experts. We pay our respects to the people, the cultures and the elders past, present and emerging. Expert opinion on the questions of law such as the standard of care or duty in negligence cases is not admissible. This is particularly true where experts testify to the ultimate issue in the case. Rather, an expert witness should be an advocate of the truth with testimony to help thejury and the Court reach the ultimate truth. Rather, considerations of relevance, helpfulness, and potential for prejudice, confusion, or waste of time must be taken into account. The mere holding of the title to property by one who knows nothing about it and perhaps has never even seen it does not rationally and logically give him any qualification to express an opinion as to its value. The opinions were further flawed because theexperts relied on inapposite literature and failed to consider critical epidemiologic studiesand other possible causes of disease. Several states have apparentlyadopted Daubert without doing so expressly.