They're a bit subversive in what they do.

Each of you possesses the most powerful, dangerous and subversive trait that natural selection has ever devised.

Now language's subversive power has been recognized throughout the ages in censorship, in books you can't read, phrases you can't use and words you can't say.

So, what we have now is what we think of as a new culture of learning only happens when you sneak it into the curriculum, and it becomes subversive.

But as it turns out, for purposes of protecting your privacy at the expense of general GPS reliability, there's something even more potent and more subversive than a Wave Bubble, and that is a GPS spoofer.