First, from the muzzle standpoint, three articles have a similarities, namely have used the subjective tone (subjective analysis question. Sprdad) Their analysis is made to the underlying labor workers based on his observations, however, are more or less joined his own life experiences. For example, the author once your text worked many bottom from his job, his entire employment experience critical hard not reasonable. Robot wen pointed out that employees can only do follow standard, not play space; This low wen every job is a very valuable, employees through work can improve its own value. In short, the three authors to readers with subjective tone convey the their ideas. However, no lies in that they use subjective tone express opinions ? it is finished