| echang08, HandsAcrossTime, I was EXACTLY where you were two years ago. I came into freshman year not knowing whether or not I was an engineer, whether or not I was premed, whether or not I was a science person or a humanities person. Concentrations I've flirted with include everything from Psychology to Physics.
However, here is where I am so glad to be at Princeton. I knew, in the midst of my decision making process, that whichever concentration I chose, I would be getting access to top-notch faculty members, be working with students who were excited about learning, and that no major I chose (or did not choose) would bar me from doing whatever I wanted after graduation.
So, even though my first two years were completely science-heavy, I was also able to take Chinese and study abroad over the summer, take courses with brilliant professors from Chemistry to Religion, and finally come to a decision about my concentration.
I'm now a Woodrow Wilson school concentrator with certificates in neuroscience and teacher prep. Now at first glance they don't appear to have any commonalities at all, but that's what I love about Princeton, that if I have an interest in all three, I will have the support and faculty guidance I need to explore to my heart's content. My neuroscience professor, for example, has said that she can see herself advising my thesis on language learning in Deaf students and my classes on education policy will be with experts in the field. I'm SO excited for my remaining two years here.
Another friend of mine turned down his Woody Woo acceptance to create an independent major.
Others are engineers with certificates in vocal performance.
If you have a desire to explore, you'll find a way, guaranteed.
Basically, Princeton has room for both those who desire breadth and for those who desire depth.
This is not to say that you'll be able to take absolutely EVERYTHING (there are way too many awesome courses for that to happen), but a reassurance that exploration is more than encouraged here.
Good luck with your choice! You can certainly PM me if you want. And congrats! | 
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..ranging from EE to Visual Arts. I think he couldn't make up his mind until the senior year, as I heard he was doing 2 JPs at the same time (not recommended). He ended up with a degree in Psychology.
