my topic  it,s plagiarism

I consider plagiarism is not a using tool for the students explain their knowledge. It,s better to create the own wayto make something new.I think there are many students use plagiarism to do their homeworks who are disable to prepare their thesis because they were not used their own way to write some compositions like an essay they have not any ability to know how to organize or to make in order an essay.

I realize for stoping the plagiarism each professor should be had a systerm in their computer to detect it because that makes many students lazy about writing an essay.And then they are not able to speak well.