When you plug something into a wall, [something] is getting plugged into you.
-Neil Postman & Charles Weingartner, Teaching as a Subversive Activity, p. 7
Postman was fond of saying, following McLuhan, that when you add new technology to an environment, you change the environment. Hence the big idea of media ecology. If you add an XBOX to your living room, you don’t just have your old living room plus an XBOX. You have a new living room – a new environment. Something fundamental in the environment has changed that will affect the total atmosphere/ecosystem.
The idea that when you plug something in, it gets plugged into you, is a helpful summary of this concept. When you plug your smartphone in – when you put it in your pocket – you don’t have you plus a smartphone in your pocket. You have new version of you.
This is not always bad (and Postman never claimed it was), but awareness is key. I often quote the GI Joe PSAs I grew up watching – Knowing is half the battle.