david weaver
... and one that the general public doesn't understand, and not just related to furniture.

There seems to be a consensus that 200 years ago, most people knew nothing, as if they were running around trying to pick their noses with their elbows.

But unwrapping the layers usually provides pretty sound reasoning for day to day methods, at least in terms of things that can be easily seen or touched. Some of the medical practices and suspicions are a little off the wall.