User blog comment:Markurion/Extended Cut or Prolonged torture?/@comment-4950606-20120406181240/@comment-4933332-20120409145654

I know the catalyst motivation seems ridiculous because there are easier ways that doesn't involve genocide that could achieve the same goal.

However i can kind of overlook it if we treat the catalyst as some sort of malfunctioning AI. Sort of a throw back to the Star Trek Original Series type AI and computer villains where the oriiginal program was there to protect organic life from syntehtics and then somehow malfunction to destroy organic life with convoluted logic.

Although saying that, that doesn't explain why Shepard was so accepting of the catalyst though.