"You have to help me find the file I was working on yesterday!" user cries. OK, says fish, what's the name of the file? "I don't know," says user.

Hmm, says fish. This is the job you were working on all day yesterday, right?

"Yes."

OK, says fish, hoping she won't have to sift through all files that were changed yesterday. Now can you give me anymore clues about the missing file? Why do you think I should be able to find it?

"Well, you were with me when I received it by e-mail from my boss yesterday."