[ Even Amon balked at how indiscriminate the dampening at been, and the control it had over physiology. ]

I've suspected they had more control over us beyond their complicated abduction scheme when it became apparent something was done to us to understand each other's spoken languages. At the risk of sounding like a conspiracy theorist: I don't think we have much control over ourselves as a price for being involuntarily recruited as Tu Vishan's last line of defense.