The world is around humans. And there are thousands of items in that environment. A part of them has nothing to do with the interests of an individual. While most Yes affects your interests. For reasons of adapting to your environment you need to know the impact for you of every thing. This allows you to take action to prevent what you hurts.
And at the same time to enhance what running in the direction of your inclinations. Human reasoning is good enough to anticipate the effects. You cannot predict with certainty any danger. And it is also able to warn about possible opportunities that leverage. However, the thought is too slow. And be precise something although it is not as accurate as he at least be faster.
The human mind has something like this: emotions. They are able to tell you if what presences is good or bad for you. When other people have actions to you don’t have to stop and think about them. Your emotions almost immediately, your intuition, you are saying if they do you should or you threaten. When you feel fear that represents one clear signal you’re before possibilities that pose a risk for you. If you’re feeling excited by what happens this is a notice that you are surrounded by favourable developments. This is the fundamental role of emotions and feelings. They serve so you target on the nature of each thing. Advance to the rational analysis that you can do in the circumstances. They say: this is good if you are experiencing emotions pleasant joy, enthusiasm, love, pleasure, but you are saying: be careful, this you should not if what you feel is fear, anger, fear, disappointment so that throughout our lives we learn to relate the emotions with the facts. If the facts are favorable, emotions positive; If events are adverse, negative emotions.