My laptop's fan says that may not be advisable. P.S. sometimes people overlook how a well-drawn illustration may be superior to photos or video; think anatomic

My laptop's fan says that may not be advisable. P.S. sometimes people overlook how a well-drawn illustration may be superior to photos or video; think anatomical drawings, for instance. In this case I feel the lack of two simple curves superimposed to illustrate the point about the variance.