5) We will probably never learn what the second light switch in the sun room does.

A switched outlet? Probably the one behind that furniture that's too much work to move to be worth testing. Considering the insane number of outlets in that room, it's a good guess.

4) Having the living room windows open onto Route 60 probably means that I shouldn't walk around naked downstairs.

Well, now that you know that, my drive to work will be much shorter. Oh well, it was fun while it lasted.