No, most people take an introductory course in an area(s) they think they are interested and then pick based on who knows what for the rest of the courses. Most non-science majors don’t have to worry about “falling” behind. Usually, people just kind of throw in an econ. major anyway. Your calc. exam is more relevant to whether or not you can testdrive a QSS course your first year or not since where you start in econ. has no calc. (unless you go to intermediate because you have AP/IB in that too). Usually people pick a couple of courses in the area(s) they’ll major in and some in just whatever other area freshman year. Some people just take whatever. Most majors are not so credit intensive or full of rigorous classes that doubling up in a semester will put your GPA at risk or something. I mean, considering that the average student (not in science courses which may count for 4-5 hours each) should be taking 4-5 classes on average (maybe leaning more toward 5 sophomore year and up), it isn’t that difficult to fit in reqs. for two majors, especially if you took a class or two in one your freshman year.