Information is facts, opinions and assumptions provided by a source about someone or some thing. Interpreting is an important skill for understanding and evaluating information. Good information is relevant, accurate, complete, reliable and targeted to the right person. It is also communicated in time for its purpose, contains the right level of detail and is communicated by an appropriate channel, i.e. one that is understandable to the user. Good information creates value. A primary source of information is an original source document like an invoice or survey data. A secondary source of information presents derived or interpreted information like an income statement or conclusions about the meaning of a survey. Internal information is generated within the organization itself, e.g. sales information. External information describes "what is happening beyond the boundaries of the organization" and is generated by sources outside the organization, e.g. census figures, trade journals, trade association surveys, Internet search results.