If you think grammar is something you only need in school, you'll be surprised to find out messing it up can sometimes cost millions of dollars or make a huge difference in your personal life. Misplacing a comma, for instance, can change the meaning of a sentence dramatically. For example, note the difference between “Let’s eat (comma) Granny!” and “Let’s eat Granny!”

In 2017, Oakhurst Dairy, a company from the state of Maine, literally lost millions of bucks because of a misplaced comma. And that was not exactly the only case that proved that grammar actually rules the world. 

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