The teacher who graded this dismal paper from a physics class is either a lot braver than I am or cares a lot less about his/her relationships with students; and s/he certainly has better artistic skills and a lot more time on his/her hands than I do:
Read the whole essay and especially the teacher’s marginalia. I think it captures the temptation of every teacher to grade papers by unloading our own cleverness onto hapless, writing-impaired students.
But the article has a fair question — how does something this bad get a 3/3 grade?