Re: Knock on wood

Glen:

>aah, I think I know where all this is coming from. I propose
> that the use of these objects (iron, wood, needle, etc) relates
> to the "World Object" whatever it may be (World Tree, World Pin,
> World Mountain).

Survivals/mincings of an original "to piously touch/knock on the
wooden idol"? Analogous to what certain Catholics do with the sign of
the cross (and other things I've never understood) to avert bad luck?