Has there ever been a time where you or someone you know swears they read over a paper they wrote, but still ends up with point deductions on their grade?
It's more common then you think and here's why:
After finishing a paper that you've essentially read parts of over a dozen times, your mind sometimes registers it as what you're trying to convey as oppose to what is actually on the paper. You may have essentially mastered the paper in your mind, unfortunately it might not be the same situation on paper.
Here's a helpful tip:
Once you've completed your paper, put it away. Do something...