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This rule is because it is easier to impose simple rules than to inculcate good taste. In real life, try to develop good taste by reading excellent examples with attention. In class, do what you ar...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/34149 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/34149 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
This rule is because it is easier to impose simple rules than to inculcate good taste. In real life, try to develop good taste by reading excellent examples with attention. In class, do what you are told so you can get good marks, graduate, get a good job, and be able to afford to buy good books which you can read to improve your taste. In the larger picture, be aware that many so-called writing rules have nothing to do with effective communication. They are shibboleths -- a form of virtue signalling used between members of a group to recognize others like them so they can exclude outsiders from preferment. If you want to enter a group that protects its membership with shibboleths, you will have to learn to imitate those shibboleths in your interactions with the group. Different groups have different shibboleths. This may include different teachers, different schools, and different employers. There is no one universal key that unlocks all doors. You have to learn what each group's shibboleths are in order to gain entry to that group.