What is the mystery hidden in Sun Tzu's Art of War 13?

inch by inch

Sun Tzu said: Soldiers, the important events of the country, the place of life and death, and the way of survival must be observed.

Therefore, the principle of planning is based on five things, and schools should seek their feelings by planning: one is Tao, the other is heaven, the third is earth, the fourth is general, and the fifth is law. Tao makes people consistent in the world, and you can die with it and live with it without fear of danger. Heaven, yin and yang, cold and heat, time system. People living on land are far and near, dangerous and easy, wide and narrow, dead and alive. General, wisdom, faith, benevolence, courage and strictness. Legalism, music system, official way, main use. We should listen to these five things. Those who know will win, and those who don't know will be invincible. So the school asked him how he felt with a plan and said, Who is the Lord? Who can? What is heaven and earth? What is the law? Who is stronger? Who practices foot soldiers? Who is the reward and punishment? I know the result from this. The meaning of scheming is to listen to my plan, use it to win and keep it; You won't listen to my plan. If you use it, you will fail. Let's go Listen to what you earn, so that you can help others. This is the trend. Those in power control power for profit.

The principle of skillful use of soldiers is skillful use of soldiers. Therefore, you can show what you can't do, use it without showing it, show it far and near, and show it near and far. Lure it, take it at random, prepare it, avoid it, scratch it angrily, be humble, do it, let it go, attack it unprepared and surprise it. The victory of this military commander should not be announced first.

The importance of planning is that the temple is the winner before the war, which is too much; If the temple didn't win before the war, it would be too few. Win more, win less, it is better to have nothing? From this perspective, we can see the results.

Second, the operating principle.

The premise of the battle, Sun Tzu said: Any method of fighting, galloping thousands of cars, riding thousands of cars, taking 100,000 armor, eating thousands of miles; Then the internal and external expenses, the use of guests, the material of glue paint, the gift of car armor, thousands of dollars a day, and then hundreds of thousands of teachers to carry.

The principle of fighting is that winning is more costly.

For a long time, the reasons for the operational principle are that the soldiers are blunt and profitable, the siege is weak, and the country has long been underutilized. The husband is dull and frustrated, and the princes take advantage of it. Although there are wise men, don't be good at them.

The significance of the operational principle is that the soldiers' ignorance of speed has not been seen for a long time. Those who have fought for a long time and benefited the country and the people have never done so. Therefore, people who are not fully aware of the dangers of fighting cannot fully realize the benefits of fighting.

Those who make good use of troops because of the principle that food is superior to the enemy will not be recruited again, and the food will not last for three years; Take for the country, because the food is in the enemy, so the military food can be sufficient.

Because food is in the hands of the enemy, the poverty of the country is far less than that of teachers, and the poverty of the people is far less than that of teachers. Those who are close to teachers are expensive to sell. If you sell them, the people will have no money. If they have no money, they will be eager to serve in the mountains. Flexible and rich, the central plains is weak at home. The cost of people is ten to seven; At public expense, broken cars and broken horses, armored crossbows and halberds, high ox carts, six out of ten.

Because of the meaning of food to the enemy, wisdom will feed on the enemy. Eat the enemy for one minute, when I am twenty minutes; One stone for one shot is twenty stones to me.

Those who kill the enemy on the principle of defeating the enemy are angry; Those who take advantage of the enemy get the goods. So I have won the car ten times in the car war, and I have a reward for the first time. What's more, the national flag is hung, the cars are mixed, and the soldiers are good and cultured. It is said that defeating the enemy is beneficial.

The importance of operational principles makes it more important to win than to last. An old friend knows a soldier's general, the people's orders and the master of national security.

Three plots to attack: clever attack

The principle of planning an attack, Sun Tzu said: The method of using troops is that the world comes first and the country is broken second; The whole army is the best, followed by Pojun; The whole brigade is the best, followed by the broken brigade; The whole army is the best, followed by broken soldiers; All Wu is the best, followed by breaking Wu.

The reason for the attack is invincible, and the bad is also good; Defeat the enemy's soldiers without fighting, and the good ones are also good.

The principle of attacking with troops is to attack troops first, then attack troops, then attack troops, and then attack cities. The method of siege is the last resort. Repair, equip, and then become March; It has been three months since I left midnight. Those who will be carried away by their anger, will cling to them, kill a third of the soldiers and not leave the city. This attack is also a disaster.

Therefore, the way to plan an attack is to make good use of soldiers, defeat other people's soldiers without fighting, pull out other people's cities without fighting, and destroy other people's countries without fighting. Therefore, the method of planning an attack is also the same.

The significance of planning an attack is that soldiers can benefit from it without eating a meal.

Therefore, the method of planning an attack with the army is the method of using the army. Ten people surround it, five attack it, and divide it. The enemy can fight it, a few people can escape it, if not, they can avoid it. Therefore, the strength of a small enemy is also a prisoner of a big enemy.

Matters needing attention in planning an attack: Kuninosuke is also strong when assisted by Zhou, and weak when assisted by Gap. Therefore, there are three reasons why you are suffering from the army: you don't know that the army can't enter or retreat, but you can't retreat. A sergeant will be confused if he doesn't know about the three services and is in charge of them. If a sergeant doesn't know the rights of the three armed forces and works with them, it is very suspicious. If the three armies are suspicious and the princes are difficult, the chaotic army will win. So there are five winners: knowing that you can fight and won't win; He who knows people wins; People with the same desire win; Treat unsuspecting people with fear and win; Those who have the ability and the king doesn't guard them will win. These five know the way to win.

The importance of knowing yourself and knowing yourself. Therefore, knowing yourself and knowing yourself is invincible. Know yourself and yourself, one wins and one loses; If you don't know each other, if you don't know your friends, every battle will be dangerous.

The application of the military power of the fourth army

Sun Tzu, the principle of applying military strength, said: In the past, those who were good at fighting were in an invincible position before defeating the enemy.

The reason for applying the principle of military power is not that we can win, but that the enemy can win. Therefore, a good soldier can be in an invincible position and cannot let the enemy be in an invincible position. Therefore, it is said that knowing wins and not doing it.

The principle of fighting for self-protection, victory can not be won, but also defended; But the winner, attack also. Insufficient rules, more attacks. Those who are good at keeping are hidden under nine places; People who are good at attacking can stay still for nine days, so they can protect themselves and win all the games.

The significance of the application principle of military power is better than everyone knows, even those who are not so good; If you win, the world will be fine, and the good of bad people will be good. Therefore, it is not enough to look at the sun and the moon for eyesight, nor to listen to thunder for hearing. The so-called ancient warriors are easy to win. Therefore, a good soldier wins without wisdom, fame and courage. Therefore, if you lose, if you are unbeaten, you will win, and if you win, you will also lose. Therefore, a good soldier is in an invincible position without losing to the enemy's failure. Therefore, the victorious soldiers win first and then fight, and the defeated soldiers win first and then fight.

The principle of using soldiers to run the army is that those who make good use of soldiers can cultivate the ability to protect the law, so it can be a strategy for winning or losing.

The importance of the use of military power: Sun Tzu's Art of War: one day, two days, three days, four days, five days. The degree of birth, the degree of birth, the number of births, the number of births, and the number of births are all said to be victories. Therefore, if the victorious soldier is called Thai baht, if the defeated soldier is called Thai baht. The winner is the people, and the water will definitely accumulate in a stream of thousands of miles, so it will be shaped.

The five armies strive to create a favorable war situation.

Sun Tzu said, "Governing the public like a widow gets good marks." : fighting many people is like fighting few people, and the name is also; Strangely, the masses of the three armies can keep those who will be attacked by the enemy from being defeated; The same is true for soldiers, such as throwing eggs at their feet.

Principle of creating momentum: whoever fights wins, by chance, by surprise. Therefore, the good and the strange are infinite as heaven and earth, and inexhaustible as rivers. In the end, the sun and the moon are also. Back from the dead, at four o'clock. There are only five tones, and the five tones are invincible. There are only five colors, and the five-color change is invincible; There are only five flavors, and the change of five flavors cannot be won. The war situation is just odd and positive, and odd and positive changes cannot overcome poverty. Odd and positive coexist, such as endless cycle, who can be poor?

The significance of creating momentum is a disease that excites water. As for the drifters, the situation is also; As for the disease of birds, as for those who are destroyed, it is also a festival. Therefore, a good soldier is short in danger. It is like a crossbow and a starter.

There are many principles for using troops to create momentum, and it is necessary to disrupt it; Chaos is chaos, and circle is unbeaten. Chaos is born of governance, timidity is born of courage, and weakness is born of strength. Cure chaos, plan also; Brave, potential also; Force, shape also. Therefore, those who are good at moving the enemy must follow it; Give it and the enemy will take it away. Use it and wait for it.

It is important to blame others for taking advantage of the situation, so those who are good at fighting seek the situation without blaming others, so they can choose people and take advantage of the situation. If you are in power, you will fight with others, such as turning over trees and stones. The nature of wood and stone, harmony is static, danger is moving, square is stopping, and circle is fine. Therefore, it is also a potential to be good at fighting against people, such as turning a boulder on a mountain thousands of miles away.

Application principles of virtual objects and real objects

Sun Tzu said that the premise of the application of the virtual and the real is to go to the battlefield to wait for the enemy to be afraid, and then go to the battlefield to wait for the war to be tired. Therefore, a competent commander can bypass the enemy instead of being moved. Those who can make the enemy self-sufficient will benefit; What can keep the enemy from coming will also cause harm. Therefore, the enemy can work hard, be hungry and be active.

The application principle of virtuality and reality is unexpected.

The reason for applying the principle of truthfulness and falsehood is that those who walk Wan Li Road without toil walk in no man's land. Those who attack and will seize attack what they have not kept; He who defends and will be solid will defend and not attack. Therefore, those who are good at attacking, the enemy does not know what they are defending; A defensive man, the enemy doesn't know what he is attacking. Rarely, as for invisibility and absurdity, as for silence, it can be the life of the enemy.

Matters needing attention in the application of virtual reality cannot be ruled out, and it is also virtual; Retreat, can't catch up, too fast to reach. Therefore, I want to fight, although the enemy is higher than me, I have to fight with me and save it; I don't want to fight, but I will defend it. The enemy must never fight me, so be good.

Form an invisible principle of using force, so form a person and I am invisible, then I specialize and divide the enemy; I only use one, and the enemy scores ten. If one in ten is * * *, then I am outnumbered; Whoever can fight more and less will make an appointment with the fighter.

If the place where the war is fought does not know the true or false method of using troops, the enemy will be more prepared; If the enemy is well prepared, we won't have many soldiers. Therefore, if you are prepared, you will be widowed; if you are prepared, you will be widowed; if you are prepared, you will be widowed. Widowed, prepared also; People, make yourself ready. Knowing the place and date of the battle, you can fight thousands of miles. If we don't know the battlefield and the date of the war, then the left can't save the right, the right can't save the left, the front can't save the back, and the back can't save the front, but it's dozens of miles far away and a few miles near.

The meaning of using virtual and real is measured by me. Although there are many soldiers, is it beneficial to win or lose? Therefore: victory can also be achieved. Although there are many enemies, we have to fight.

The principle of finding out the enemy's situation is to know the gains and losses, the reasons for the movement, the place of life and death from the shape, and the advantages and disadvantages from the angle.

The principle of camouflage is to show the shape of soldiers, as for invisibility; Invisible, unfathomable, and beyond the reach of the wise. Because the shape is wrong, it is better than the public, and the public cannot know; Everyone knows the shape of my victory, but they don't know the shape of my victory. So its victory will never end, but will be shaped in infinity.

The importance of avoiding reality and attacking emptiness, the image of husband and soldier is water, the shape of water, avoiding heights and falling; The shape of a soldier, avoiding reality is empty. Water flows because of the ground, and soldiers win because of the enemy. Therefore, the soldiers have no constant potential and the water is impermanent; Being able to win because of the enemy's change is called God. So the five elements are impermanent, the four seasons are impermanent, the days are short and long, and the months are dead and alive.

Seven armies competed for the advantage of winning the battle.

The principle of military struggle Sun Tzu said: Any method of using troops will be under the command of the monarch, and the troops will get together to discuss and give up peace, so it is not difficult to use troops. Those who have difficulties in military struggle should take pedantry as a straight line and suffering as their interests.

The principle of military struggle is so because of its twists and turns, but its interests are attractive, and future generations must do it, and ancestors must come. This is also called a detour plan.

Matters needing attention in military struggle Therefore, military struggle is beneficial and dangerous. It is better to raise the army for profit; If you compete for benefits by entrusting the army, you will donate a lot. Therefore, it is a hasty thing to catch up with the real armor, and it is everywhere day and night. If two roads compete for a hundred miles, three generals will be captured, the strong will be the first, and the stop will be the eleventh. If you strive for profit in fifty miles, you will be a general, and the law will be half done; Three miles is good, then two thirds is good. Therefore, the army will die without baggage, food and commission.

The method of military struggle is that people who don't know the governors' plans, who can't make friends, who don't know the shape and obstacles of mountains, who can't March, who don't need rural guides, can't get the right place; Therefore, the soldiers stood by and practiced fraud, moving for profit and changing from teacher to teacher; Therefore, its disease is like the wind, its invasion is like fire, its immobility is like a mountain, its difficulty is like yin, and its movement is like; Pay attention to the masses in rural areas, distribute land benefits, and move with power. The prophet's circuitous plan wins, and this method of military struggle is also.

The significance of military struggle: the prophet's circuitous plan won.

"Principles of Military Struggle Military" said: "Words don't match, so it is a drum; Meeting each other is a flag. " Those who are rich in golden drums and flags are the eyes and ears of the people; Since the people are single-minded, the brave cannot advance alone, and the fearful cannot retreat alone. This has been done by many people. Therefore, the night war was full and the day war was full, so it became the eyes and ears of the people.

Using the principle of attacking the heart to seize the gas, the three armies can seize the gas and the general can seize the heart. So the vitality is fierce, lazy during the day and returning at dusk. Therefore, those who are good at using soldiers should avoid their spirits and hit them on the ground, which is also to cure their qi. Treat the chaos by treating it, and wait for it to be treated. This is also the way to treat the heart. It is also a rule to be as kind as possible to the near, to be attentive to the tired and to be satisfied with the hungry. There is no need to put up a correct banner and not attack Chen. This is also a change in the rules.

Therefore, the combat method in military struggle is the combat method. Don't climb the mountains, go against the mountains, pretend to the north, attack sharp soldiers, eat bait soldiers, not only return to the division, encircle the division, and force the enemy. This fight is also.

89-99 emergency

The principle of nine changes: Sun Tzu said: Anyone who uses soldiers will be commanded by the monarch, unite the soldiers to gather the people, have nowhere to give up, be friends with the land, leave no Jedi, look for land everywhere, and die in battle; If there is something wrong with the painting, your life will not be affected if the army does not attack, the city does not attack, and the land does not dispute.

Those who are familiar with the reasons for the nine changes will understand the benefits of the nine changes and know how to use troops; Those who will not benefit from the nine changes, although they know the terrain, cannot benefit from the ground. I don't know the skills of managing soldiers in Jiubian. Although I know five benefits, I can't use them.

The significance of the nine changes is the concern of the wise, which will be mixed with interests. Miscellaneous and credible; It is also possible to solve the problem of mixed hazards.

The principle of using troops in the nine changes is to defeat the princes and harm them; Those who serve the princes take their inheritance; People who are inclined to the prince benefit.

Nine changes in the use of the art of war means using the art of war, relying on it not to come, relying on us to wait for it to come; You can't attack it without relying on it.

There are five dangers in the precautions of the nine changes: death and killing; Will be born, return to Lu; The speed of anger can also be insulted; Honesty can make people feel humiliated; It's annoying to love people. There are too many of these five things, and the disaster of war is too great. To annihilate the army and kill the general, you must take five risks and you must not ignore them.

March 9 March principle

The principle of marching sun Tzu said: the land of the enemy, the mountain depends on the valley, depending on the high life, there is no victory, and the army on the mountain is also. No water is far away; Guests come from the water, don't welcome them in the water, let them hit them half-heartedly. Those who want to fight, welcome guests without water; Depending on the height of life, there is no water, and the army on the water is also here. Never refuse ze, go without staying; Cross the army to repel Ze, and back the tree to grass. Here, it is also necessary to repel the Zejun. Pinglu is easy and the right guard is high, and the army of Pinglu is also here.

The reason of marching principle is that the Yellow Emperor is superior to the Four Emperors, because of the benefits of these four armies.

Precautions for marching: Where the army likes high and hates high, Guiyang is cheap and yin, and the health is practical, and the army is disease-free, it is said that it will win. Hilly dikes must be in the sun and right rear. The advantage of this soldier is also the help of the land. When it rains, water comes, and those who want to get involved wait. Wherever there are ravines, yards, dungeons, tight encirclement, sinkholes and gutters, you should go and stay away. I am far away and the enemy is close; I welcome it and the enemy supports it. Those who have obstacles, yellow wells, reeds and mountains beside the army will want something, which is where the treachery lies.

The principle of reconnaissance to determine the enemy's situation in March; Those who are near quiet depend on their risks; Away from the challenger, he wants people to enter; People who live in comfortable places are also beneficial; All the trees are moving, come on; Those who have many obstacles in the grass are suspicious; Birds rise and fall; If the beast is terrible, it will cover it. Dust is high and sharp, and the car comes; Humble and broad, only come; Those who are scattered arrive, and firewood is also collected; Those who travel less will camp in the army. Humble and benefit from the preparer, enter also; Those who argue irrationally advance will retreat; Kerwin Chen who went out first without finding a good job; Those who seek peace without agreement will also seek peace; It is also expected to run the old ice car; Those who half advance and half retreat are lured. Those who stand on sticks are hungry; People who drink water first are thirsty; If you don't see the benefits, you will work hard. Bird gatherers are empty; People who call at night are afraid; Those who disturb the army are not heavy; Those who move the standard are chaotic; Angry people are tired; Millet horses eat meat, the army has no suspension, and those who do not return are also poor bandits. Earnestly, Xu talked with people and lost his job; People who repeatedly admire are embarrassed; People who are punished several times are sleepy; Those who are first violent and then afraid are not refined; Those who come to thank you want to have a rest. The soldiers greeted each other with anger, and for a long time, they did not leave each other. We must observe them carefully.

The significance of the principle of marching is not more favorable, but that there is no Wujin, which is enough to unite troops, guard against the enemy and lead people. A husband who is careless and easy to make enemies will be captured by others.

The principle of marching to run the army is that soldiers are punished without attachment, and it is difficult to use if they refuse to accept it; If the chess piece has been seized and punished, it is not available. Therefore, it is necessary to use both words and efforts together. If you teach your people, the people will obey you; If you don't do what you want to teach your people, the people won't accept it. Let vegetarians live in harmony with others.

Topography: Ten Principles of Topography Utilization

Terrain types: accessible, suspended, supported, narrow, dangerous and far.

Characteristics and utilization principles of the terrain: I can go, he can come, and the sky is clear; All-round, high sun first, benefit grain and war. You can go, but you can't go back, you hang up; If the enemy is unprepared, he will win; If the enemy comes prepared, it will be invincible, difficult to retreat and unfavorable. I got off to a bad start. I got off to a bad start. Supporters, although the enemy is good for me, I have nothing to show; It's good to draw away and let the enemy come out and hit it. Narrow-minded, I live first, I am surplus to the enemy; If the enemy is in the first place, don't follow the rest, or follow if you don't. People in danger, I live first, I hold high the sun and wait for the enemy; If the enemy comes first, distract him, not follow him. Those who are far away are evenly matched and difficult to challenge, which is not conducive to fighting.

The principle of terrain utilization is based on these six principles, and the way of land is also; It is necessary to take it to the post office.

Therefore, there are walkers, slackers, sinkers, collapses, chaos and northerners. These six things are not natural disasters, so let it go. Husband is evenly matched, and when he strikes ten, he goes; The pawn is strong, the official is weak, the official is strong and weak, and it is trapped; The official was very angry and refused to accept it. If the enemy hits himself, he doesn't know what he can do and will collapse. Will be weak and lax, the doctrine is unclear, the officers and men are impermanent, and Chen Bing is vertical and horizontal, saying chaos; We will not be able to predict the enemy, unite with less, attack the strong with the weak, choose no enemy, and just leave. All these six, the road to failure is also; It is necessary to take it to the post office.

The significance of terrain utilization lies in the help of terrain and soldiers. Expect the enemy to win, calculate the distance and go to the general. He who knows this and fights wins, but he who doesn't know this and fights loses.

The principle of using troops is to help those who have terrain and soldiers. Expect the enemy to win, calculate the distance and go to the general. He who knows this and fights wins, but he who doesn't know this and fights loses.

The terrain uses the principle of running the army to treat a soldier as a treasure, and you can take it to the deep stream; Treat a chess piece like a son so that you can die with him. Thick can't make, love can't make, chaos can't be cured, and arrogance can't be used.

Knowing the importance of terrain, knowing that our army can strike, but not knowing that the enemy can't strike, is half the battle; Knowing that the enemy can strike, I don't know that our soldiers can't strike, and get twice the result with half the effort; Knowing that the enemy can strike, knowing that our soldiers can strike, knowing that the terrain is invincible, is half the battle. Therefore, we know that the soldiers are moving without being fascinated, and there are no shortage of soldiers. Therefore, know yourself and know yourself. Knowing heaven and earth, winning is not poor. [ 1]

Method of fire attack

The types of fire attack Sun Tzu said: There are five types of fire attack: one is fire people, the other is fire accumulation, the third is fire storage, and the fifth is fire team.

The principle of fire attack is that there must be a cause for fire and fireworks must be used.

The reason for the fire attack principle is that sometimes, there will be a fire. When it is dry; For those who stay in the sun, the moon is on the basket, on the wall, on the wings and on the raft. For those who stay here for four nights, the wind will rise.

The method of fire attack Every fire attack should be dealt with by the change of five fires. If the fire started from the inside, it should be from the outside. He who sends his troops and fires, waits quietly, does not attack, and is extremely firepower, but can follow and cannot stop. Fire can come from the outside, not from the inside, but from time to time. Fire prevailed, but it didn't attack. The day wind is long, but the night wind stops. Every army must know that there are five kinds of fires and keep them by number.

Therefore, the meaning of fire attack is clear to those who attack with fire, but strong to those who attack with water. Water can be destroyed, but it cannot be taken away.

Precautions for fire attack: if a person fails to repair the attack, the attacker will be fierce and let him stay. Therefore, the wise master will consider it, and the good will repair it. Use it if you don't move, and don't fight until you have to. The Lord can't start a division in anger, and he can't fight in anger. Move when it is advantageous, and don't move when it is advantageous. Anger can revive happiness, resentment can revive happiness, national subjugation cannot revive, and the dead cannot revive. Therefore, a wise monarch should be cautious, and a good general should be alert. This is also the way to secure the country and the whole army.

13. How to use spies?

Sun Tzu said, "If you start with a hundred thousand troops and take the Wan Li Road, the people will spend thousands of dollars and the public will do thousands of things every day." 700,000 people provoked internal and external chaos, stayed on the road and were not allowed to do anything. Stay together for a few years in order to win one day, and those who love nobility and wealth and don't know the enemy's situation are heartless and inhuman generals, who are neither masters nor masters. Therefore, you are wise, you are wise, so you can win by moving. Success comes from many people, and so does the prophet. Prophets should not be taken from ghosts and gods, nor should they be like things, nor can they be measured, but should be taken from people and know the enemy's feelings.

There are five kinds of rooms: a cause, an inner room, opposition, a dead room and a living room.

The principle of "using five rooms" originated from five rooms, and I don't know its way, which is the treasure of the king of God.

The use room is characterized by being used by strangers and villagers. People inside use it because of their official position. Opponents use it because of their enemies. Those who died, in order to blame the outside world, let us know, but spread it to the enemy. People born, report back.

Attention should be paid to the use of the house, so the relatives of the three armed forces should not be intimate, and the reward should not be thicker than the other party, and should not be intimate. You can't use space without wisdom, you can't create space without benevolence, and you can't get the reality of space without subtlety. Wei zai! Wei zai! Do everything. Occasionally, things haven't been sent yet, and those who heard them first, occasionally, and sued them are all dead.

Significance of use: We must know the names of commanders, left and right sides, worshippers, gatekeepers and scheerers in places where troops are going to attack, cities are going to attack and people are going to kill.

By indirectly asking the enemy to come among us, we can benefit from it, guide it and give it up, so that we can take its place. Therefore, it is known that both the hometown and the mainland can be used. Because it is known, it is a matter of life and death, so that the enemy can sue. Because knowing, life can come as scheduled. The Lord will know five things, and what he knows will be in the opposite room, so the opposite room cannot be thick.

Wisdom is the most important thing in ancient times, and it is also the prosperity of Yin and the summer; Zhou Zhixing is also in Yin. So, if you are smart, you will achieve great success. The important thing for this soldier is that the three armies rely on it.

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