You and I make many decisions every day. Most are trivial, we don’t even think of them as decisions. (Should I wear grey socks?) Once in a while, we face an important decision. (Should I buy this house?) How can I make a smart choice?
In the best of worlds, there would be a guideline for every situation. Someone wiser than me would have foreseen the choices I face and offered his wisdom.
In the real world, in the absence of this monumental handbook, we have to fend for ourselves. One important tool is thinking of risk. What are my alternatives and what consequences will they carry? The risk perspective.