Take a look at this democrats.com forum

[Juan]

Did I say something wrong ?

[liberty_student]

When don’t you say the wrong thing Juan! Sheesh! [:P] [:D]

[Juan]

I thought I didn’t say anything especially outrageous…

[Jon_Irenicus]

Hey, ya hear that Jim?

-Jon

[Stolz2525]

@rixross

"You have a lab set up somewhere for this kind of stuff? Even if there was a test run of this you couldn’t conclusively say it was better or worse than anything else unless every other variable except for the form of government were held constant. "

Clearly, but you could see the postives and negatives of such a situation. It would not be a perfect answer, but it would be something you could draw conclusions on, instead of simple theory.

Theory is actually better in some real world cases. Look at monetary policy for example. In theory, the basics are pretty simple. In practice, however, there are a lot of people who gain from making it confusing and obscuring results, just like there is for government.