Hello! Quillbot is a great tool for rephrasing and paraphrasing text, but it's important to note that plagiarism checkers like 𝐓𝐮𝐫𝐧𝐢𝐭𝐢𝐧 or Grammarly are more suitable for checking the originality of a thesis. These tools compare your text against a vast database of academic sources to detect any instances of plagiarism. Quillbot, on the other hand, focuses on rephrasing and improving the readability of your text. I recommend using a dedicated plagiarism checker to ensure the originality of your thesis. Let me know if you need any more information on this topic!