Today, while glancing over the table of contents for a book that outlines a case that might be useful in constructing about 200 words for chapter six, I made the happy discovery that this author just happened to spend 20 or so pages doing a very workmanlike (gotta love them Europeans!) outline of some intricate-yet-boring-to-research issues of medieval procedural law in the time and place I am studying -- issues that I was going to need to track down for the as-yet-unwritten chapter two.
Only rarely will you hear me spontaneously yell "Oh, yeah -- right on!" when I'm in my office looking at a book. This was one of those times.