The battle over just how efficient the market is and how to define risk has been overdone for several decades. I think most people have come to their senses or have, at least, accepted that markets aren’t nearly as efficient as was once preached.
Still, it’s always nice to know that not everyone back in the day fell for a theory that assumed we were all rational beings. That somehow we can make emotional decisions throughout our daily lives but the second our thoughts turn towards investing and money, we shut it off entirely and only act rationally. Seriously, how far-fetched is that?
Had more people stopped to think about it for a few seconds, they might have saved the blogosphere vasts amounts of time and energy on an argument that refuses to die.
As Graham lays out, the market sometimes lacks common sense and gets emotional with the information it has. Continue Reading…

George Charles Selden believed that market prices were driven by the mental attitudes of investors. So in 1912, he wrote