A medical student was surprised when he got a failing grade in his radiology class. So, he approached his professor to ask why he received that kind of grade.
“Do you remember the self X-ray you performed?” the professor questioned.
“Yes,” the student replied.
“An excellent picture,” the professor said, “of your lungs, liver, and stomach.”
“If it was excellent, why did I get an F?” the student said.
The professor sighed and said, “I had no choice… you didn’t put your heart in it.”