Many papers are unreliable. You can copy it online and send it to you. Many students are inexperienced. They didn't do paper duplicate checking until the day before "handing in homework". Now all master's theses must be online. If you just mix outside the system and mix in the system in the future, someone will definitely take out your graduation thesis to study at the critical moment of promotion. In this case, it is purely fate to find someone to write for you.