This is an interesting article. But as I was reading it I found myself thinking "I'll have to check on some more authoritative blog if this is correct." It used to be the NYT *was* the authority, or at least the best you could get. Not any more.
Behind the Lion Air crash off Indonesia: The story of a modification to the Boeing 737’s flight control system shows how competitive pressures and technological complexity can affect airliner safety
Detailed and concerning read. One example of how the profit motive can kill people.
UNINTENDED CONSEQUENCE OF CUTTING CORNERS: Behind the Lion Air Crash, a Trail of Decisions Kept Pilots in the Dark