@jeremiah @mangeurdenuage There is no guarantee that the people would have lived if more rent was paid and the extra functionality of the proprietary software was made available.

I believe the "extension" offered added a function that would report if the MCAS was behaving abnormally and therefore possibly given the pilots a chance to realize that the MCAS was nosediving the plane and disable it - configuring proprietary software is hard enough when you're not in a nosediving plane.