Urgh what a mess. I have taken the following actions
Merged Why the need for the MCAS on the Boeing 737 Max 8? into What is MCAS trying to fix on B737 MAX?
Left What is MCAS' purpose? as duplicate of What is MCAS trying to fix on B737 MAX? as it came much later and was already closed as duplicate
I didn't see much benefit in the final merge, but if ...