I've been thinking a lot about undergraduate core curriculum lately. What should it include?

I just want to point out for the record that if we're discussing a core curriculum for undergraduate education, I figure it would be even better to get such a core curriculum into the regular, secondary schooling system that almost everyone goes through. Of course, in practice, implementing such would require an overhaul of the secondary schooling system, which seems much more difficult than changing post-secondary education. The reason for this would probably because changing the curriculum for post-secondary education, or at least one post-secondary institution, is easier, because there is less bureaucratic deadweight, a greater variety of choice, and a nimbler mechanisms in place for instigating change. So, I understand where you're coming from in your original comment above.