I don't understand it. College students sometimes have difficulty writing thesis statements, a difficulty that can arise out of confusion. First year students, especially, may not know what a thesis is or how to form it into one statement. Understanding what a thesis statement is, what makes it weak, and how to strengthen it, aids a writer in writing clearly and successfully. A thesis is an idea.
Writers can think of the thesis as the camera lens, which the reader looks through to see the essay.
The writer wants his or her reader to view the subject in a certain way. Through this camera lens the writer can persuade the reader that his or her concern is valid. The thesis states this concern, articulating the stand that is taken and providing a natural organization for the essay. In order for a thesis to be able to be developed, it must be a specific idea. The thesis statement should not need to be longer than one sentence.