We have table rules, actually, including no reading materials at dinner. 'Cause the whole family dining thing doesn't work quite the same if everyone just sits at the table with their own books in front of their faces! When I was a child, we tried numerous legalisms to get around this, such as reading magazines or newspapers instead of books (which is how the rule became no reading materials, not no books), and laying books or mags open on the floor (not technically at the table!). Exceptions for menus and such already on the table in restaurants, of course.