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From natural science, mathematics, economics, religion, art, history, ethics to human sciences models have been used for years to explain different concepts of the world.  However this relation has been questioned in promoting or not a loss of information and knowledge to the world.  The question that arises is if models do help or hinder the search for knowledge?First of all a model can be defined as a simplified representation to illustrate and explain a broader concept and structure. Models can be used to show a variety of information allowing a easy understanding and grasp.Their purpose is to give a basic knowledge and perception about a complex idea and information that should then be analyzed and understood to further increase the knowledge about the subject, and research more about  it. They are not an accurate description of reality but a way to perceive through language, reason and logic a concept that wouldn’t be understood by everyone in other more complicated ways. A model can help the search for knowledge when it results in stimulating the individuals in acquiring additional information and deeper awareness, on the other hand it can hinder the search for knowledge when it limits the individual from acquiring new accurate knowledge. In the search of knowledge the use of models can help gain new knowledge in particular in the areas of natural sciences and human sciences, specifically psychology, if used and perceived correctly.Scientists continuously use models to explain a and simplify real world complex concepts and system that involve difficult mechanism and processes. The most common model studied and known today is the “Solar system model”.The solar system model explains how the universe is made up of multiple elements such as planets, asteroids, comets, the moon and the sun.According to the model every element in the universe orbits around the sun, that is because of is gravity that attracts them towards it. At the same time these objects try to move away from the sun, this system result in a continuous movement of the elements around the sun. This simple model is a way to explain a rather more complicated mechanism in an easier way.The model helps in the search for knowledge because it allows people to easily understand a concept and gain knowledge about the world, stimulating at the same time the need for a deeper understanding about the subject or specific details related to the model. The solar system model allows to visualize and perceive a concept that otherwise would have been too complicated and hard to understand.However, on the other hand the use of models can also hinder the search of knowledge in natural sciences. Take for example the commonly believed model of the “Flat Earth”, for many years individuals believed and were sure that the Earth’s shape was a disk and thus flat.By simplifying a rather complicated structure and concept this model described the idea that the Earth had a flat shape.This model has been accepted by many around the world for some years spreading a wrongful belief and knowledge. Because of the presence of this model, that people believed and trusted, the search for additional knowledge to prove the opposite has been limited and this model has been believed to be true.This model had strengths, that is giving individual a basic conceptual knowledge and awareness of the earth structure, and weakness, such as being an inaccurate representation of reality. Despite the limitation that models can bring in natural sciences we can acknowledge that without models individuals would not even try to understand difficult concepts or research them. Because of the presence of models in natural sciences, even if not accurate, the search for knowledge takes place, this models help to increase our current and future knowledge about a concept giving the structure to help search additional knowledge now or in the future. Models in science can be tested and proved, helping knowledge to advance trhough logical and reasonable representations. The same question about the role of models within the achievement of knowledge arises in regards to psychology.As with natural sciences in psychology models are used to explain and illustrate psychological concepts and ideas in a simplified way.The Wernicke-Geschwind Model, a model of language, illustrates better how the brain is divided in different parts, which all have specific different and complicated  functions. For example, they found out that the area for language comprehension was the left posterior superior temporal gyrus. If these parts are damaged in any case the matching function will not work as always, thus the wernicke’s aphasia shows us that a particular patient is able to talk but he could not be able to understand his own speech.Wernicke model leads us to a further understanding in the language process, in fact part of this is the understanding of written and spoken language.On the other side it may be argued that Wernicke-Geschwind Model is not completely accurate and presents in fact several incorrect points, thus the model hindered the search of knowledge providing a model believed to be true essential knowledge. Nevertheless, the model has been very useful to set a basis in the comprehension of knowing how, what and where the brain function and language areas were situated and has lead to a further future investigation of the concept that consequently helped in the search of knowledge and the development of a new more accurate model.We can see how models are used in multiple areas of knowledge to communicate through logic and reasoning a clear concept explaining real life concepts. It may be argued that models do not help in the search of knowledge because they offer such a simplified representation of an abstraction that individuals do not feel the need to argue the existing model and learn more about the mechanism that support the model. The extent to which models hinder the search for knowledge arise at the point where models are perceived as true representation of a broader and more complicated concept. If the society accepts models as they are illustrated this may deny the gaining of new knowledge. The key aspects that distinguish when models are useful or not is in the way they are used and perceived by society. As long as models are understood, analyzed and questioned they will help bring knowledge, but as long as they are perceived and use as reality without proof they may hinder it. As discussed above it is proved how models are not only used as a form of gaining knowledge but as a way to use that knowledge to gain further information.With the understanding acquired by models individuals have a base knowledge that can be used to acquire a new form of knowledge about different subjects supporting or contradicting the existing model but still leading to the acquisition of a new form of knowledge. For instance the Geschwind’s model was a revised model based on Wernicke previous models, that demonstrates how knowledge can be learned through models.It can be concluded that to an extent models can hinder the search for knowledge but when used and perceived rightfully they can help the search for knowledge in the world.

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