Unfortunately, I don't have any idea. I'm still not sure whether the defense ever got the FBI version of the MFT (I thought not, but then a debate ensued). And, if they did have it, I did not see the testimony which caused the judge to decline to allow him to testify as an expert on forensics. I only caught the last few minutes of testimony and the judge's decision. So, I fail to qualify myself as an expert on this! :innocent:
Under Rule 702 of the NC Rules of Evidence, an expert can be qualified on the basis of "knowledge, skill, experience, training or education." The "or" is significant. The case law suggests lots of kind of contradictory standards. The appeals courts leave the matter largely to the trial court's descretion if it is a point on appeal - meaning it is a tall order to have that be reversable error (not impossible if the error deprived the party of a fair trial). During the trial, the judge can exclude if he finds the method of deriving an opinon unreliable, and on the other hand can include merely on the basis the offered witness is better qualified than the jury on the particular subject! State v. Howard.