Yes, it's several pages long but WELL worth the read.
Here's a sample...
[i]The year before, the same thing happened with Ryan Leaf, who was the Chase Daniel of 1998. The San Diego Chargers made him the second player taken over all in the draft, and gave him an eleven-million-dollar signing bonus. Leaf turned out to be terrible. In 2002, it was Joey Harrington’s turn. Harrington was a golden boy out of the University of Oregon, and the third player taken in the draft. Shonka still can’t get over what happened to him.
“I tell you, I saw Joey live,? he said. “This guy threw lasers, he could throw under tight spots, he had the arm strength, he had the size, he had the intelligence.? Shonka got as misty as a two-hundred-and-eighty-pound ex-linebacker in a black tracksuit can get. “He’s a concert pianist, you know? I really—I mean, I really—liked Joey.? And yet Harrington’s career consisted of a failed stint with the Detroit Lions and a slide into obscurity. Shonka looked back at the screen, where the young man he felt might be the best quarterback in the country was marching his team up and down the field. “How will that ability translate to the National Football League?? He shook his head slowly. “Shoot.?
This is the quarterback problem. There are certain jobs where almost nothing you can learn about candidates before they start predicts how they’ll do once they’re hired. So how do we know whom to choose in cases like that?
The article compares teaching to being a QB and it always seems to come down to actual on field/in class performance IN A SIMILAR SITUATION. College QB's don't play in a pro situation and so some skills that make you successful in one might actually damage your chances in the other.
This article changed my understanding of QB's.