Making economics more intuitive

Are basic economic principles counterintuitive? Bryan Caplan over at Econlog.com says no, and that economics is just "poorly explained". To illustrate, he provides the following demonstration:

I'm going to present a few allegedly counter-intuitive economic propositions, then explain them at a 6th-grade level.

1. Counterintuitive claim: Free trade makes countries richer, even if the other countries have big advantages like cheaper labor or more advanced technology.

Intuitive version: We'd be better off if other countries gave us stuff for free. Isn't "really cheap" the next-best thing?

2. Counterintuitive claim: Strict labor market regulation is bad for workers.

Intuitive version: Employers don't like hiring people if it's hard to get rid of them. Suppose you had to marry anyone you asked out on a date!

3. Counterintuitive claim: Egalitarian socialism creates poverty... even starvation.

Intuitive version: If everyone gets the same share whether or not they work, you're asking people to work for free. People don't like working for free, especially when the work isn't very fun. (This is my response to Sumner's Great Leap Forward Challenge: "But how do we explain to school children that millions had to starve because of a policy that encouraged people to share?")

4. Counterintuitive claim: Prices are determined by supply and demand.

Intuitive version: If a good was free, consumers would want a lot, but producers wouldn't feel like making much. If the good costs trillions of dollars, producers would want to make a lot, but consumers wouldn't want to buy any. In between there's got to be a price where consumers want to buy as much as producers want to make.