If You Only Know 5 Things About Investing, Make It These

When you first start to study a field, it seems like you have to memorize a zillion things. You don't. What you need is to identify the core principles -- generally three to twelve of them -- that govern the field. The million things you thought you had to memorize are simply various combinations of the core principles.

Evolution tells you a lot about biology. A handful of cognitive biases explain most of psychology. Likewise, there are a few core principles that explain most of what we need to know about investing. 

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