There are two parts to this assignment.
One, you have to submit a tentative thesis.
Two, you have to submit a brief description of a plausible counterexample to that thesis; the counterexample is one that we have not discussed in class and was not in the readings.
You will be graded as follows: If you submit a thesis that follows the standards of the paper assignment and a counterexample, you get 100% (this is one homework grade). If you have a counterexample but leave off a thesis, or your thesis isn't at all formatted according to the paper assignment, you get 50%. If you have a correctly formatted thesis, but no counterexample, you get 70%. Your grade does not depend on how plausible your thesis is. You can get full credit submitting a thesis that is not pre-approved, even if I don't approve it, as long as it is formatted correctly (it is two conditionals).
Topics, pre-approved theses, and thesis formats are specified on the paper assignment.