The Daubert/Kumho implications of observer effects in forensic science: Hidden problems of expectation and suggestion

One must not equate ignorance of error with the lack of error. The lack of demonstration of error in certain fields of inquiry often derives from the nonexistence of methodological research into the problem and merely denotes a less advanced stage of that profession.(1) This is a criminal investigation, sir. You are asking about bias controls, which refers to research.(2).