My experience with machine learning and vision systems amounts to one lab assignment a few years back, so forgive me if this is a stupid question - but why is there not a 'complementary' hard coded system built in that can override cases like this? I can think of no reason as to why stopping a car driving full speed into an inanimate object would be a thing that a human can't code. Surely there must be something in place - an "if(hurtlingTowardsWall){ignoreAI; stopCarQuick;}".