I totaly disagree with you Travis.

I know bout two people that I perfectly know and they both have at least a masters degree in two fields. You'd be surprised on what we are capable of doing once we set out our minds to it.

There is no limit, and if there was we will never be wise enough to figure out what and when it will be. Our (humans) minds are so sophisticated and complicated we can't even understand ourselves. Regardless of knowledge such as phsycology. Every day, every second comes a new discovery on our mental behavior. One example of a person that we all know that pushed the limits, is Albert Einstein. I don't know wether or not he knew several things other than math, but he used only bout 40% of his brain and he was a genious. My point is that you cannot determine that having a very high potential in several fields is impossible since we are mentally evoluating time to time.