User blog comment:The Milkman/Extended Expectations, Part II/@comment-2250460-20120628025027/@comment-899316-20120628042135

It is a bit more drastic than "everybody is green now." The entire galaxy shares one collective pool of knowledge and memories. I think Synthesis is a bad ending for a few reasons. One, everything is just a little too good. There is no conflict, nowhere left to advance, just a boring, stagnant galaxy. Second, it seems very out of place. The series has always been somewhat realistic in its portrayal of technology and science, yet suddenly there's this magical, largely unexplained beam that will shoot Shepard's DNA into every being near a Mass Relay? And what about races near inactive Relays, or life that developed outside the Mass Relay network? They wouldn't be hit with the magic Shep-beam, meaning some life will still create these supposedly life-ending synthetics, and the whole affair amounts to jack-frigging-squat. Third, and this is more of a personal thing, I am simply wierded out by by the concept of a galactic hive-mind.