Chedva:
Depends on your definition of “open”. If you don’t want to take a foreign language, you don’t have to. If you don’t want to take a lab science, OK. There are so many classes in each division that it’s hard not to find something you’re interested in, and one of those three courses can apply to your major (so that leaves only two). If you’re double-majoring in two of the divisions, you only need 3 other courses.
It does not seem conceptually different from the general education requirements at schools that are not normally seen as “open curriculum”. For example:
http://guide.wisc.edu/undergraduate/#requirementsforundergraduatestudytext-otp5 https://registrar.uoregon.edu/current-students/bachelors-degree