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Our quick, intense emotional reactions sometimes overwhelm our 
rational brain, forcing us to over-react or misperceive the situation. 
But it is our emotional intelligence, according to Goleman, located in 
the prefrontal cortex, which enables us to understand and manage our 
intense emotions. So, to be a good leader or a caring spouse or an 
effective parent we need knowledge about emotions, control of our 
feelings, and interpersonal skills. Of course, articulate speech and 
technical knowledge are usually necessary to make accurate 
predictions and accomplish goals too. But, high academic intelligence 
(as measured by school achievement or intelligence tests) does not 
give you much assurance that your judgment in many areas will be 
accurate. Persons who do well in school, just like the "slow students," 
make the kind of thinking errors dealt with in this section.  
 
Only two things are infinite, the universe and human stupidity, and I'm not sure about the 
former. 
-Albert Einstein  
 
 
About 300 years ago, John Locke (1632-1704), who influenced 
Thomas Jefferson's drafting of the Constitution, said there were three 
kinds of people who have mistaken opinions:  
1. 
Those who accept hand-me-down beliefs from parents, friends, 
ministers and others, and don't do much thinking for 
themselves.  
2. 
Those who let their emotions and needs dominate their thinking 
and reasoning.  
3. 
Those who try to be logical and reasonable but lack good sense 
and/or expose themselves to only one viewpoint.  
Locke was making a distinction between the inexperienced, poorly 
educated, emotionally swayed mind and the highly intellectual, 
objective, systematic, thorough, and logical mind. He was also making 
the point that straight thinking and reasoning skills aren't just 
inherited; accurate thinking is the result of inherited ability and a lot of 
experience and wisdom. Recent research, according to Herbert Simon 
at Carnegie Mellon University, has shown that a true "expert" needs 
enormous stored knowledge (10+ years of intense study and practice), 
a mind capable of systematically searching that memory for useful 
information, and the skill to detect defective, distorted thinking. Being 
smart isn't just a matter of being born that way.  
How do we, even the more intelligent and expert among us, come 
to misunderstand the situation and/or draw erroneous conclusions? 
This is important for us to understand. The usual conception is that we 
have a logical, reasonable mind which is somehow occasionally