In a park

You're in a park, slowly taking a walk.
You approach a bench.
You see a woman sitting on that very park bench, reading SICP.
You approach her.

Your punch line>

I'm interested in abusing referential transparancy to "hack" someone's (will go unnamed) computer, for reasons I'll keep to myself. I've done a little research on it, but I haven't yet found any solid evidence that you can use referential transparancy to "hack" someone's computer.