As a teacher let me see if I can help ya out. If JMan goes to Lincoln, he will spend $20 for a pit pass but not be able to bring in his cooler.. If JMan went to Port, he would be too cheap to buy a pit pass and would get a $18 general admission, but be able to take advantage of the "1080 valet cooler parking". Under his biased Math equation, he would spend $2 less at Port and not have to concern himself about cooler parking, leaving him $2 up and well rested at the end of the evening..
Hope that helps! Go Brian!
fixed...thanks to practical applications of new math.