Hiring an editor makes a perfect sense if you really want to ace your paper. Every writer needs a second pair of eyes, and this is even more important for students who are just learning to write. Self-editing is ineffective. When you reread your own writing, your brain does what it’s doing to you all the time. It makes you see what you want to see, and you may omit many typos and occasional errors.
A recent study by the Radboud University has shown that our brains dislike gaps in visual pictures and tend to fill them in with things that are actually not there. That’s where professional essay editors can come in handy.