I think the answer to #2 might be the most revealing. I read his comments as well. There are errant algorithmic issues daily, but they are caught early. Begs the question, did the robot take 25 minutes to stop once they turned him off? If you are driving a 120 mph and someone says "stop." It will take a bit. Interesting stuff.
"When you fail, you can grow exponentially. When you succeed you tend to grow incrementally." Getting rid of the ball and chain, stock by stock.