After you have done your research and written out your thesis, publishing it is important. Before you send the manuscripts to the publishing house, you should get editors and first readers to help go through the work and these are the reasons why:
An editor is a fresh pair of eyes and will have another perspective on how to put things together. The editor gives the view of that of a reader, not the writer, and that can be helpful. An editor should be able to mark out all the flaws (mostly overlooked by the author) in a work and give an acute perspective that can help the author improve the quality of the work.
Instead of reading your work seven to eight times before it feels right, an editor helps out and you can use that time to do whatever else needs to be done.
Editor probably has more experience
Most editors have spent long in the business and are more professionals in the art of editing than writers, they have worked with many authors. The editor can use the experience of working on a previous work when dealing with a challenging work. Editors should act as guides in getting the work into the public and help new authors with their inadequacies.
It helps enhance your work, not replace it
The editor goes through your work to enhance it. They correct all the errors such as styles, grammars, choice of words etc. in the research work manuscripts and saves both the author and the publisher the headache of going through an error-ridden work. The job of an editor is to make the work better, not change the narrative completely. They can tell if a whole paragraph needs to be taken out or anything needs to be added to improve the quality of the work. Authors should also be open to corrections and feedbacks from the editors.