Concentration on the important or just not being able to walk and chew gum at the same time? Sorry Lou, couldn't resist I can do both of the above. I can't dance on a table on one foot and rub my belly and head in different directions and sing at the same time. Not much call for those skills.
I did a 4 year college program in 2.75 years and earned a 3.82/4.0 GPA by working on the task at hand.