Zach Weinersmith, author of Saturday Morning Breakfast Cereal, continues to pump out the best web comic for academic economic jokes. Not just jokes about economics, but occasionally jokes defending economics as a discipline.
This recent strip lampoons educated folks who insist economics is flawed because it assumes human beings are rational. Here's the link.
For example, say you had a store that sold two similar types of food at similar prices and customers bought them at about the same rate, say $1 hamburgers and $1 hot dogs. If suddenly you raised the price on one of the items to be 100 times that of the other, you would expect a shift in sales. Sales of the inflated item would fall, perhaps to zero.
If you want to hold the view that humans are not rational, then you would have to believe that purchases habits would not be affected in any way by that large price increase. There is a rich discussion about whether economics deserves to be called a science or not, but when someone denies economics has any credibility at all they are assuming that half of those customers would eat $100 hamburgers instead of $1 hot dogs.
Yet, many anti-market advocates assume that the government will have perfect information.