A broad statement is a general statement that can apply to a large group of items or people. A broad statement can also be defined as vague because it lacks the specifics or details to clarify the meaning.
When writing, it is best to avoid broad statements or broad topics that do not effectively communicate a person's thought pattern or overall purpose. When using broad statements, it is difficult to thoroughly cover the topic in detail because broad statements skim the basics of the idea. Broad statements are not very useful in debates, conversations or essays because they are often commonly known.