It is important to evaluate sources before gathering them because B. not all sources have accurate information.
Regardless of the kind of source we are working with -Internet, books, magazines, etc.-, we have to bear in mind that not all sources of information are accurate, unbiased and reliable. Therefore, it is important to assess the source before actually considering its information.
Third person omniscent can read the thoughts and feelings if the charecters while third person limited can only see them and what they are doing/saying