6.13

Chapter: Weak Points and Strong 6.13
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Translation:

By discovering the enemy’s dispositions and remaining invisible ourselves, we can keep our forces concentrated, while the enemy’s must be divided.

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Commentary

If you know them and how they are likely to act, then you can make more reliable plans. This includes only defending where they will very likely attack, allowing you to make these forces stronger.

If you conceal your thoughts from them, then they cannot do the same to you, so increasing your advantage. They hence need to have defenses set up in many places in case you attack there.

If they do not know where your troops are positioned, then they may be paralyzed by indecision and risk.

It is often easier to get some information on a diffused force. If your forces are in one position, but concealed, then this adds to the confusion of the enemy. In this way, a concentrated force can gain further advantage.

While industrial espionage is frowned upon, it does happen. At the very least it makes sense to try to work out what their strategies may be and to respond accordingly.