Does your university have a time period after the semester begins where you can drop and add classes with no penalty? Because if they do, you have a chance to actually experience the class before you decide. Also, if you are worried that you don't have the background you would need to do well in the class, ask the professor about it. I can't imagine that would be a huge problem, though, since it does seem to tie in with your major. Anyway, good luck. Just from the title, it sounds like it could be a really interesting class.