Mm-hm... [She totally believes that. She glances at her knee and then tilts her head back to study him.]

A door to another dimension. [That's what he'd said, anyway] You could go anywhere, if it works, provided you could get back. [A one-way door doesn't amount to too much, after all. He'd just be stuck again.]

If you could actually choose where to go you could get us all home, but that's a lot of different worlds to try and get locked onto... [How would you even get the coordinates for something like that?]