For instance: the BBC website had a piece a while back about the presidential candidates' economic policies with this passage:
Mr McCain has endorsed "supply side economics", calling for more tax cuts for business to boost economic growth and sharp cuts in spending programmes.
Mr Obama, on the other hand, wants more domestic spending, particularly on health care, and has indicated that he is not averse to higher taxes on the rich to pay for it.
Again, I'm not going to start analyzing policy, but I really like - no sarcasm here, I promise - that the same debates that have cropped up again and again through the history of economic policy as an actual thing are still here. A crude characterization would be to call Obama Keynesian, on the strength of what the article is saying; it's the famous injection of spending by the government to try to prop everything up, the great policy success of the original Keynesian era. That was the one that dragged America out of the Great Depression.
Or did it? Surely a bold stroke to open the government's wallet when the whole country is broke, but, of course, there's plenty of wiggle room for debate. One of the many things we talked about in our course was the role of war spending in providing a natural bounce out of the Depression. Same concept, different reasons.
McCain's being painted in the BBC article as a supply-sider, which is something of a dirty little epithet around the Dem-leaning economics faculties of the world. Paul Krugman made his journalistic bones (as opposed to his impressive academic record) with "Peddling Prosperity", a big chunk of which was devoted to a critique of what came to be called supply-side economics. Perhaps I'm reaching a bit here, but you could plausibly argue that supply-side policy grew out of monetarism, which was itself the big weapon against the oil-shock driven recession of the 1970s. Keynesianism versus monetarism was the big debate in economic policy, and it lives still into the 21st century.
As a teacher, the beauty of these debates is that they don't need fancy techniques, or math, or number crunching, to be explained. Naturally some of the academics who've spent their careers on policy questions are doing very complicated things, but to explain - in simplified form, but correctly - what was driving the problems of the 30s, the 70s, or whenever, and the logic behind the policies that were tried, is easy. It takes a bit of clear reasoning and is even easier if we are willing to use a few simple diagrams, both commodities that go a long, long way in economics. It's possible, even, to boil the whole mixture off to a supply-and-demand story. Don't roll your eyes, though: there's a reason why that's the most famous, most reproduced little model in economics, and how awesome that we can use it to talk about the biggest policy issues of the last century.
Many economics courses are 'tooling up' courses, where you learn those models, the diagrams, the math; what is even more crucial are those courses like the one Professor Cameron taught me, the ones where we use those tools to think about interesting things. It's truly staggering how simple the tools are that we used, truly gratifying to learn how far even the simplest little insight can go.