And there are people on FR who think it is virtually impossible for an innocent person to be convicted. No convition here, but a screw up for sure. Law enforcement is government and government can screw anything up. All you doubting Thomas' out there remember this screw up.
I don't think many people, FR or otherwise, think it is "virtually impossible" for an innocent person to be convicted. Of course it happens all the time, and it always will.
But it didn't in this case. Not only was he not convicted but the investigation ultimately cleared him. What screw up?