<p>Not that I’ve actually gone ot school yet, but personal pro: I’m able to look into three different concentrations, take classes that’ll actually push me forward on the path of many different concentraions, all in my first semester. If I decide to switch, I haven’t lost anything. And even if I double concentrate in math/science, I can tone myself down, take them both as ABs, and take my fill of humanities courses to whet my appetite (I think the number of total courses for both the physics and computer science AB, total, came to about 20. Which means 12 courses, or 2.5/year, to do what I want with).</p>