While searching the house of the late Dr. Lanning the demolition bot outside
Gets reprogrammed to begin demolition immediately by the AI known as VIKI.
At one point the demolition bot is traveling through the house towards Detective Spooner as he runs away from it.
Why didn't the demolition bot stop as per its 3 laws AI programming?
As I understand it VIKI was only able to override the 3 laws on the new NS-5 models, because of their wireless update capabilities. She wasn't able to override any AI device, otherwise she would have also done with the NS-4 models which were being replaced.