What is the butterfly effect?

What is the butterfly effect?
Butterfly effect is a concept in chaos theory. It refers to the dependence on initial conditions: Tiny differences at the input end will be quickly amplified at the output end, And the butterfly effect is everywhere in economic life. After reading "Butterfly effect 1", I feel cold and cannot suppress trembling. I don't know why this movie has brought me such a big shock. Let me add it to the first place in my favorite movie. Maybe it's my wish to go back to the past, change history, and make everything better.
Like his father, Evan is suffering from intermittent amnesia. He often makes some strange actions, such as picking up a knife for no reason, and scaring her mother, but she does not remember it. From small to large, Evan was suffering from this disease, and he was forgotten from several thrilling experiences. When seeing a psychiatrist, the doctor provided his mother with a way to help Evan with his memory treatment, that is, to keep his diary. Since then, Evan has been writing from a few years old to grow up.
In Evan's life, there were several incredible experiences. When his teacher asked him to draw the future, he did not know why he drew a bloody scene of killing two people. This led to the fear of his mother and teacher. For the first time in his life, he saw a mental doctor and began to write a diary. His mother entrusted him to George, the father of his childhood girl, for a weekend. However, no one thought that this weekend would change Evan's life trajectory forever. George has a special "sexual interest" hobby for young men, so he repeatedly moles his son Tommy, resulting in his daughter Kelly and his son Tommy living in a depressing environment since childhood, character distortion, especially Tommy, is basically a devil. That weekend, George made a movie for two 7-year-old children in the basement. Evan only remembers that they were stripped out of their clothes and did not remember anything left. As a matter of fact, they shot a "restricted-level film" for children just like an adult that day. While watching it, Tommy almost screwed down his head. After this incident, Evan continued to grow unexpectedly. His illness is still not improving. The psychologist suggested that Evan be taken to a mental hospital to visit his father. But I don't know why, his father almost killed him like crazy. He came to uniform his father's security guard and lost his hand and killed his father. Evan saw his father with his own eyes and fell under his feet, with blood flowing out of his head. When he was a teenager, he had become a decadent teenager. He smoked and mixed up in the dark room. One day, Tommy decided to use explosives to try ranny's guts and asked him to put the Ignited explosives into a mailbox in front of a villa's house. When the explosive was about to blow up, Evan only remembered to cover Kelly's ears with both hands, and the rest of his memory was gone. When he woke up again, Renyi had fainted and everyone was confused. He didn't know what happened. In fact, at the moment of the explosion, the hostess of the villa took the baby to the mailbox, the baby's little hand opened the mailbox, a huge explosion will split the mother and child. Evan, Kelly and Tommy turned and ran away, and Renyi was stunned and stood still. After this incident, Renny was excited, but Evan did not know anything. After the incident, Kelly was beaten by her father, and Evan, who comforted Kelly, made the two children closer and closer, and they kissed each other and were caught by Tommy. Tommy loves his sister very much. He tries his best to protect her sister and never let her fucking father touch her. At the same time, he hates any man who takes her sister. The Mad Tommy decided to retaliate. He put Evan's dog in a sack and prepared to burn it into gray with fire. Seeing the smoke of Evan, Kelly was knocked down by Tommy with a wooden stick, and the ranny who had been behind him could not open the bundle of dead ropes. Finally, the crazy Tommy burned Evan's dog. Kelly and Evan sat down and burst into tears. Renyi became more vulnerable due to deep self-blame. In this way, Evan's mother moved, and their mother and child left this sadly. A young love cannot be done.
After leaving, Evan joined the Psychology Department of the State University and joined the brothers to lead a normal boy's life. Until one day, he saw his diary when he was young, and he fainted. When he fainted, he saw his burned dog. He recalled some details, but he wanted to find ranny to confirm. Unexpectedly, Renyi still had a poor personality because of the past, and he could not let it go. He still remembers Tommy's warning that he threw Evan out of the room in a rage and fell into the room. After confirming the incident, Evan began to remember the incident. He returned to his former town and found Kelly, a waiter in a small restaurant, to confirm the weekend at the age of 7. I was so glad to think that Kelly, who was here with herself, had a nervous breakdown by this problem. She lost control instantly and ran back to her house with tears, leaving only a cry back and a sentence: "Since you love me, why don't you leave me here for so many years ?!" Evan wanted to give up his path to recovering his memory, but did not expect the sad Kelly to commit suicide one hour after crying with Tommy. Crazy Tommy called Evan's dormitory, told him the news, and claimed his life. Helpless Evan was stunned. The only thing he could do was to deliver a bunch of flowers at Kelly's funeral, and threw the card "I will come back for you" that I wrote to Kelly into the grave.
When the sad Evan came back to read his diary, he unexpectedly found that while reading the log, he returned. He went back to the 7-year-old basement. His excited words made Kelly's father stunned. The Restricted film was not made. This change has led to the resumption of Evan's life. When he woke up again, Kelly became his girlfriend and slept beside him. Everything seems to be wonderful, and he and Kelly are happy to be in college. When he decided to propose to Kelly, Tommy, who was released from prison, disrupted their plans. Evan changed Kelly's father, so he never touched Kelly and gave all his abnormal tendencies to his son, Tommy. Tommy became hopeless and went to jail. Tommy is jealous of Evan and can get everything. He attacked Evan late at night, and Evan, who had been ready, sprayed out Tommy's eyes with a sprayer. The angry Evan frantically shouted TOMMY: "No, laneni will not be excited; without you, my life will not be like this." Out of control Evan lost his hand and killed Tommy, causing his own prison disaster. In prison, Evan managed to get his mother's diary, and he was about to change it. While his diary was snatched away by the leader of the gay gang, he tried to persuade his jailer to change the past. In front of his friends, he read the log, returned to the past, and returned to the elementary school class. His teacher asked him to draw his own future, and he painted a murder scene. After the painting, he inserted the notepaper into his hands in front of the teacher. When he woke up again, the jailer found two scars on his hand out of thin air and believed in him. Evan entered the Target Room of the Gay Head, killed the two and started reading the diary. The crazy younger brother was thrown into the door by Evan's jailer, and Evan was back in the past when he was about to get out of the door.
He returned to the garbage dump where Tommy killed his beloved pet dog. Before that, he found a powerful weapon to cut the rope. He handed it to ranny and told him to take it. It must be useful. The weak ranny believes Evan. The three children arrived at the scene and saw the dog in the bag. Evan blurted out: "Tommy, I know you have been protecting your sister, don't let your father be alone with her." Tommy, who heard this sentence, put the puppy out of the bag and did not know what to do with the tool Renny, and used it to kill Tommy! Evan's life came back again. When he woke up, he saw the bundled Renyi in the neurology hospital. Renyi was treated as a mental illness and became a young man. In the bed of despair, ranny said, "You should be lying here ." He remembered Kelly and went back to the town to find her. He did not expect her beloved girl to become a prostitute and become addicted to drug abuse. Kelly is still in love with Evan, but he doesn't understand why Evan is so confident that he can change the past. The sad Kelly leaves, making Evan cry. Self-blaming Evan once again opened his diary, and he decided to find his father and change the status quo. His father saw his son's experience as he did and advised him to stop. Otherwise, his mother may be killed. At this moment, Evan thought he was God and could not hear his father at all. He returned to the day of the explosion. When the villa owner approached the mailbox, he rushed to the front frantically. The disappointed Tommy shouted, "I am here to save you, madam." The mother and child are dumped, and the mailbox is exploding in front of Evan.
When Evan woke up this time, everything seemed good. Ranny woke up from the bed next to his dormitory and was having sex with his girlfriend. Evan happily stretched out his waist and found that he lost two of his forearm and became a disabled person. Stunned, Evan found that lanni's girlfriend was his beloved Kelly! These three friends have changed their life paths because of him. They were moved by Evan's spirit of hard work to overcome difficulties. lanni became a famous outstanding student on campus, and even Tommy became a good student because of saving the hero. They had a happy life, and nothing else. At this moment, Evan only wants to say a few words to his beloved Kelly. When Kelly said that she was in love with Evan, but now there is already the truth, and she had Leni, Evan decided to commit suicide. Tommy accidentally saved evan and showed him his mother. Evan found that her mother had lung cancer and her life was dying. Sadly, Evan understands that because of his disability, his mother was addicted to smoking and had lung cancer. As his father said, he killed his mother. Evan glared at his mother and told her that everything would be fine. The stunned mother saw the shadows of his mental father in Evan's eyes.
Evan started his diary journey again, and he went back to the seven-year-old basement. This time, he decided to kill George kelly and Tommy's abnormal father, who had caused all disasters. When he ignited the explosive, George rushed up and threw it away. Kelly thought it was a firecracker, picked it up, and was killed. When Evan woke up again, he had already been in a mental hospital. All his diaries are collected. The only thing he can find is his recorded images. When he learned that his father used album to change the past, he chose these final hopes-video. He locks himself in a remote room, hits the door of many doctors and security guards, and writes down his "Last words". Then he looks at the video and returns to the party he met Kelly, some threatening words were made to Kelly, and Kelly was so scared that she didn't know Kevin. After her parents were divorced, she was taken care of by her mother and stayed away with Tommy from the Child-loving father, there was no misfortune behind it; Renny, Kelly, and Tommy became promising students; and finally Evan decided to burn those photos, diaries, and videotape to completely forget those memories and make everything beautiful, the film also leaves the curtain when Kelly and Evan pass.
Once and again, things have changed because of a small thing, and huge changes have taken place. Evan was well-designed every time he came back, but all of them were completely derailed because of the sudden appearance of another small thing and went in the crazy direction. The Butterfly Effect suddenly made me realize that the current arrangement of the butterfly effect is owned by heaven. Maybe we should not change the past. The past is always past, and the future is unknown. This is why we are now called "present ".