> Imagine I invite you to a trip in my private jet. To extend your metaphor a bit, what if you didn't invite me aboard, and I'm a stowaway? Or a hijacker who

> Imagine I invite you to a trip in my private jet. To extend your metaphor a bit, what if you didn't invite me aboard, and I'm a stowaway? Or a hijacker who wants to divert the plane to a different destination? What if my presence isn't merely inconvenient, but actually hazardous?