Final answer:
According to Sun Tzu, the two key understandings to achieve success are knowing when to fight and when not to fight, and knowing how to handle superior and inferior forces.
Step-by-step explanation:
Sun Tzu, a Chinese military strategist from the 5th century BC, identified two key understandings that one must achieve to be successful according to his book, The Art of War:
- Knowing when to fight and when not to fight: This understanding emphasizes the importance of strategic decision-making and choosing battles wisely. It involves assessing the circumstances, the enemy's strength, and the potential outcome before engaging in combat.
- Knowing how to handle superior and inferior forces: This understanding emphasizes the ability to adapt tactics and strategies when facing both stronger and weaker opponents. It involves leveraging strengths and exploiting weaknesses to gain an advantage.