Joshua Dobbs, aerospace engineering and five more CFB players with crazy majors

Edward AschoffKNOXVILLE, Tenn. -- Joshua Dobbs' eyes stare at the dry-erase board filled with formulas associated with supersonic and subsonic speed. A professor discusses airflow, shock angles and an "unreadable chart" in the back of the textbook.

When the professor tells his class of maybe 30-plus that his lecture is over, Dobbs is asked what he understood from the 50 minutes inside his compressible flow class.

"Some of it," Dobbs says with a smile. "Not all of it. This class isn't the clearest class."

But what seems foreign to most is normal to Dobbs. Tennessee's senior quarterback, quickly approaching the most important season of his collegiate career, doesn't blink at the challenges his…