Infi is short for infinitesimal calculus. I guess back in the old days they hired anybody.
About your comment, number 2, you understand that the mirror one is putting aginst the other is not a 100% correct reflection becuase it is influenced by the mirror-bearer thoughts and agendas. And frankly, you can quote any poet or statesmen or D-list celebrity, but they too are subjective.
I understand, it is maybe whining but after the military service it is hard to go back to school. I did it, got accepted and now passed the first half of my first semester.