A professor and an investor are walking down the street when the investor sees a $20 bill and stoops down to pick it up. The professor says "Don’t bother. If it were really there, someone would have picked it up already."(The joke is that markets are supposed to be efficient, so investors can't make any money as everything is "priced in" into any speculative asset already. The professor believes that markets are efficient because that's what his theories says. Meanwhile, investors make money.)
Now, the question to you to think about is: Do you recognize the problem with the thought process of the professor, and notice how this is evident in reality? For extra credit, think of all the bullshit you are surrounded with on a daily basis. I am not only talking about politics. Even in allegedly high-IQ jobs people throw around bullshit phrases like "best practices" in order to justify borderline moronic processes. It's as if every excuse is good enough as long as it lets them avoid using their brain. You think I'm too radical? Read up what has become of the companies that were featured in Peters' In Search of Excellence.