User blog comment:Dragonzzilla/Describe Your Mass Effect 3 Ending/@comment-1786741-20120903230651/@comment-1978336-20120904031131

Remember that according to my theory the Reapers and the Catalyst, despite being separate independent entities, are at the same time one and the same. You can destroy the Reapers without destroying the Catalyst, but you cannot destroy the Catalyst without destroying the Reapers. The Catalyst will continue to exist in the form of the Reapers themselves, thus still giving the Reapers purpose.