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Which Is The Coolest Sci-Fi Weapon?
The Crucible & the Catalyst: a device capable of either wiping out all artificial intelligence in the galaxy, controlling advanced AI, or fusing genetic and synthetic DNA. (Mass Effect)
That weapon would be the most efficient option in case AI become more intelligent than humans and they decide to wage war against us.
The "weapon" that has been built for months using valuable resources, and draining galactic workforce, just to give one man almost absolute power? This sounds like too much risk to even use it.
Many fans of the trilogy didn't like this ending.