There is a famous phrase “to take out of the brackets” that means “to ignore” or “not to take into account”. Indeed, in Math a bracketed expression is more important, but if we are talking about texts, the situation is diametrically opposed. The parenthetical text is usually a less important additions or circumstantiation. How come mathematicians have a stronger hold over a spoken language than writers?

Anyway, you can determine the weight of everything using brackets of different sizes and shapes from this set.