Karl had to explain the next step twice before Harry got it, but it was central to the little game of leapfrog Karl had dreamed up. Harry was to call R&D Minneapolis and tell somebody there "I want to send a file to you, and then I want you to send it somewhere else for me"—of course all dressed up with reasons that would make it all sound plausible. What confused Harry was this: He was supposed to say " I'm going to send you a file," when it wasn't going to be Harry sending the file at all. He had to make the guy he was talking to at the R&D Center think the file was coming from him, when what the Center was really going to receive was the file of proprietary source code from Europe. "Why would I tell him it's coming from me when it's really coming from overseas?" Harry wanted to know.