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<p>I am not sure if the AP exam is enough to count as an equivalent of 1b (if so, it would probably require a 5) but you will have to take a placement test before your Freshman fall anyway which will determine the correct math class for you. If this math class is beyond 1b, then you may take any class for which 1b is a prereq.</p>
<p>1b is a prereq for 19a, so yes taking 19a will satisfy the prereq for PS2, but in order to take 19a you will have to score well enough to place out of 1b anyway. So again, it depends on how you do on the math placement test.</p>
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<p>Hooking up is prevalent, as it is with most groups of 18-22 year olds, but not ubiquitous. If the rates of virginity and such are any indication (which they may not be, in fairness), hooking up is probably less prevalent at Harvard than other American universities. Plus it’s not as though anyone forces you to do it, and there are plenty of other ways to interact with the opposite (or same) sex.</p>
<p>I said earlier in the thread that I’ve observed relationships at Harvard to be either very serious relationships or casual hookups, with little in between. I stand by that for the most part. The high pressure environment combined with Harvard students’ chronic unappreciation for the virtues of unstructured free-time sort of imposes an all-or-nothing view of relationships. Of course there are exceptions, and if you desire a different form of interaction with the opposite (or same) sex, you will certainly find people of a like mind.</p>