So being a Smart One... means you still have some volition?
Randy said "Hi(?)" <BITE> then, "Go" <some sort of struggle> then, "Leave".
that sounds like a Zed that is in control of the choices he's making and is capable of issuing commands/instructions.

This interaction made me think of a scene in one of the Halo Books "Silentium" where an ancient forerunner 'colony' matriarch imbeds her genetic coding (or a means to communicate) with the Librarian via... biting her on the arm.

i know it's just a coincidence, but could Randy be trying to "communicate" with our human faction? Does being a Smart One also mean you keep your 'good nature' as well?