Now I know what they are talking about - assuming they actually do. Thanks! A house with wiring like a goat fence is something you won't even find up here in the back-country Ozarks, though you may still find one or two wired with bus and socket fuses.
True--the wall-insulator stuff is turn of the century type of crap. 1900 turn of the century, that is.
And even if the house was still wired with bus and socket fuses, it's not a terrible expense (comparatively speaking) to rewire the house to code, provided you know how to pull wire through the existing setups and into a new breaker box. It's not always necessary to bust up the drywall.