. . . Though the question has hardly been conclusively answered, the consensus of opinion among interested parties seems to be that neither an Executive nor a Selectric could have produced these memos. My purpose here is not to debate the relative merits of either of those typewriters; that discussion is happening elsewhere. Rather, I want to take a moment to consider the dark horse candidate, the one piece of equipment that is widely believed to have been capable of producing a document similar to these memos, but that has been dismissed as being so improbable an alternative as to...