One time a very beautiful woman showed up at the AI lab, visiting from Romania, and took quite a fancy to me. And started hanging out with me quite a lot and the relationship started to develop in interesting ways and we became great friends. And then eventually she says, 'I can't do this, I have to tell you what's going on.' I was, like, 'What?' And she's, like, 'Well, I'm a spy. I've been sent... I'm supposed to, like, get all these secrets from you, but I really like you and I can't do it and I like it here and I want to defect.' And she's like, but... she's like, 'My supervisor's coming and he wants to, like, know that I'm meeting you, so he wants to meet you. But I can't lie to you that he's just a spy. He's pretending to be a scientist, but I'm going to be in trouble if I don't introduce you, because he wants to see that I really have a relationship with you, and...' So I was saying, 'Okay, well, I'll meet him, that's great.' So he shows up and she introduces him, he says, 'Oh, I'm a scientist', and I'm like, 'Oh really, what kind of scientist you are?' And he says, 'Well, I'm really a theoretical physicist.' And I was, like, 'Oh, that's interesting. I used to be a theoretical physicist. What kind of theory do you do?' He's like, 'Well, really, it was more a mathematician.' I was, like, 'That's exactly what I was, really. What kind of math?' And I kept on doing this to him until he kind of got uncomfortable and went away. He clearly... whatever he tried to shift to, I claimed to be an expert at it. And so she eventually defected and became an American citizen and never went back. So that was my first experience with it.