MSNBC Dateline Extra December 23, 2019 04:53:00
>> in the process of transposing numbers from actual measurements at the scene to the crime scene program, numbers were just transposed wrong. >> reporter: wallace admits the error but says it was minor, that conrad truman did not deserve a new trial. >> it's not that significant as they made it out to be. >> reporter: did those incorrectly entered measurements change your opinion of conrad truman's guilt? should they change anyone's opinion? >> they didn't change my opinion. >> reporter: nor did it change the opinion of the deputy d.a., tim taylor, who decided to take on the task himself of p...