100,000s of thousands of people is still a lot of people. my bad > Additionally, even a fatal flaw in the software would most likely not result in every one on

100,000s of thousands of people is still a lot of people. my bad > Additionally, even a fatal flaw in the software would most likely not result in every one on every train simultaneously dying or even being injured. I'm glad you're so willing to play fast and loose with safety, but I'm not. Not to mention the impact due to lack of trust when an accident happens! I'll leave train systems to engineers who are rigorously testing their implementations, not you, thanks :)