Software and humans are completely different. Humans are, in a way, very fault tolerant. In software, one erroneous line of code can literally crash the car. In a human, one stray neuron will probably don't do much harm.
The problem is: the car interacts with its environment. When a new algorithm kicks in, the car will behave differently, and as a result the input data will be different, and thus the recorded data will have lost its relevance.
