Notes/outline:

-Typical "angle of attack" is about 2-3 degrees

-Boeing created a new plane that has a flaw that makes the plane tilt up in certain conditions, and if a plane is tilted upward 10 degrees or more, has a risk of stalling

-To fix it, Boeing made a new stability system to push the nose of the plane down when it discovered a dangerously high angle

-The system on a Lion Air flight was faulty and thought that the plane was at a dangerous angle, even though it was at a 0 degree angle, and pushed the nose down. The pilots tried everything they could against the faulty system but the plane still ended up crashing

-They fail-proofed it and now there are way less chances of crashing due to a faulty system

https://www.nytimes.com/interactive/2019/03/29/business/boeing-737-max-8-flaws.html