Hello:
The last sentence in the first submission in this site is the most important. Namely that some other reason was the cause of the accident. My previous guesses were wrong. The idea that failing to pay attention is still possible, --- but obviously in a different manner.
The latest news is that the train gradually increased its speed from about 80 miles per hour to 110. This seems to indicate the following problem. In programming the computer to determine the speed of the train, the driver intended the speed to be reduced from 80 to 50 which is the recommended speed limit for negotiating that severe turn.
It appears as if the computer was programmed to increase the speed rather than decrease it. Then while the driver was otherwise occupied, he failed to realize his error and when he finally did, he applied the brakes as hard as he could but it was obviously to late to avoid the accident.
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