Sun Tzu's strategy teaches that opportunities are both 1) right in front of you and 2) hard to see. Why is something that is right in front of you is hard to see? Because your perspective, which is subjective and not objective, blocks your view. As human beings, we get locked into certain views of our situations, which filter out information that doesn't fit our mindset. Sun Tzu's entire system for strategic analysis was developed to overcome this problem.