User blog comment:The Milkman/End of the Line/@comment-3228423-20120701165740/@comment-4967682-20120701204354

I like to assume that the Synthesis option was made by God Child, the Control was option was made by TIM, and the Destroy option is just the Crucible firing like originally intended. Think about; that is exactly what is was built for by the original species that started it. Kill synthetics. Synthesis and Control on the other hand are explicitly stated to be created by the Catalyst and TIM respectively, and fit with their motivations.