The Cyborg in Us All

[Cosimo]

perhaps some sort of "off switch" then?

Yup, an on/off switch.

 

[seandog]

Harkonian heart plugs

 

[Amp34]

Yup, an on/off switch.

But then you get to the point of needing a physical on/off switch and at that point the point of having one to "switch on and off lights" in the first place....