Does this mean I shouldn't put paper plates or paper towels or cardboard food containers in my microwave anymore?

Somebody that advised against putting wood in the microwave please explain the dangers to me. I thought microwaves acted directly on the water contained in the food (or wood) that you place in it. Doesn't that mean that when the water is all evaporated out, the wood would no longer be heated????

All this assumes there are no nails or screws in the wood (metal in a microwave).

I really don't want to be a smarta**, but come on.

Steve