Providence.  That'll cover the whole of southern New England.  Ok maybe Boston would be better, but we Rhode Islanders are really averse to long drives.  Just so you know anything over ten minutes is a long drive to us.

The novel Altered Carbon by Richard K. Morgan, never really stops to explain anything at all and it forced me to reason out much of what the technology is like from little hints.  That's not to say that there are no explanations at all, but (if i am remembering my reading experience correctly) I was well into the novel before there was any kind of an explicit explanation about the tech, the rest is done through little clues.  It was kind of fun to work it out that way.  So I say use none the first time through, and then when you have someone read it, have them mark points where they are totally lost not knowing why x does y, or how z was made. 

Actually, I think that Changes did what I wanted. It effectively (and very nicely) Ended the Dersden Files.

No.  Just no.

I will not accept the end of the Dresden Files with anything less than a signed, notarized letter from Jim Butcher, in his handwriting that says, "Yes, guys, it's over."  Until we get that there will be more Dresden.