Does that mean tables from which you eat or tables that the elements are arranged in?

Based on the fact that it's paired with "live in a world without chairs", probably the former.

regardless the tables on which the elements are arranged in are man made, we'd still have the elements they just wouldn't be catorgorized

A world without chairs, but with tables, would basically be like in Japan, where they sit on the floor and have a low table. Doesn't sound too bad.