Shortly after I published last week’s post on State v. Babich, an astute reader asked about the court’s harmless error analysis. How, he inquired, could the improper admission of expert testimony that the defendant had an alcohol concentration of 0.08 be harmless error? Did the jury’s verdict indicate that it found the defendant guilty only under the “under the influence” prong of impairment rather than under the “alcohol concentration of 0.08 or more” prong? To answer these questions, I had to dig into the record on appeal and provide a bit of background on the requirement for jury unanimity in DWI cases. I thought others might be interested in my response.
I wrote in September 2015 that the court of appeals’ view of the admissibility of retrograde extrapolation under Daubert did not look much different from its take on the admissibility of that evidence under old Rule 702. As of yesterday, it does. The court of appeals in State v. Babich, __ N.C. App. __ (2017), changed the green light for retrograde extrapolation testimony in DWI cases to yellow.