Calling a Stranger

I hadn't seen my friend Gregg since before Thanksgiving, so I thought I'd call him up and suggest we rectify that. And I hate talking on the phone, so you know I wanted to see him.

Him: Hello?
Me: Hey, what's up?
Him: The usual. How 'bout you?
Me: About the same. Do you even know who this is?
Him: Not entirely sure.
Me: It's Karen! See, it has been too long.
Him: Oh, hey!
Me: I'm calling because it's been ages since we got together so I thought maybe this week...
Him: You mean for the signing?
Me: Um, what signing?
Him: Wait, Karen, you're not coming to the signing?
Me: Is this Gregg XYZ?
Him: No. Is this Karen ABC?
Me: Nope. Hey, my mistake. Sorry.
Him: (laughing) Hey, it was fun talking to you. See you, Karen.
Me: See you, Gregg.

One digit off in a phone number and I'm in a parallel universe. What are the chances that a random mis-dial results in getting someone with the name of the person I was calling? Or that he'd have a friend named Karen?

I came *this* close to asking him where the signing was, but good sense stopped me.

Sadistically speaking, I live on planet Odd World. No need to push those boundaries any further.