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First , a theory should be accurate : within its domain , that is , consequences deducible from a theory should be in demonstrated agreement with the results of existing experiments and observations . If data are obtained from any of these sources , a researcher should not assume that the source meets the definition of " publicly available . If necessary , a union should employ additional temporary staff , use a professional mailer , or have the election officials make the distribution in order to comply with any requests . Second , a theory should be consistent , not only internally or with itself , but also with other currently accepted theories applicable to related aspects of nature . If you are waiting for a determination from the IRS , a worker should be treated as an employee until the determination is made . If the answer is correct , a message should be printed and the program should go on to the next problem . Likewise , a union should not allow one candidate to place a campaign article in the union newspaper without first notifying other candidates that they too may campaign in this way .