Don't take my word for it, read Black Swan by Nicholas Noah Taleb.
The fundamental assumptions of economics cannot be tested or subjected to falsifiable hypotheses. No economic theory, micro or macro, can be tested with controlled double blind studies, because there is only one economy, akin to a single living organism, and portions cannot be isolated to test single variables. Now that we've proven it's junk science that involves hand-waving with calculus, let's address economists.
Economists are people who cannot and do not question the contradictions in their field of endeavor... similar to Scientologists. Much of their work is creating elaborate [econometric] models, using a state of mind that can only be described as criminal negligence. These models never predict their own failure (market crashes). Their basic assumptions, such as 'rational markets', involve psychological gems such as viewing the average consumer as a wealth-maximizing robot. These models never account for grey markets, black markets, conspiracies, corruption, or government intervention. The 2008 Financial crisis is a study in "Irrational" behavior by the largest banks who simply bought enough of the federal government that they could repeal Glass-Steagall, allowing them to gamble their commercial assets into high risk, corrupt, and conspiratorial investments like subprime mortgages... completely Rationally from the perspective that their control over the Federal Government would force a Bailout in the event that the high risk investments collapsed... but the same investments would produce huge short term rewards. We all know what happened.
Economists from the head of the Federal Reserve on down should be jailed for treason. That would be the efficient solution.