The subject of my choice: Logic
People constantly make decisions about what think as true in different aspects of their lives. As Fernández Casad0 states, although everyone agrees that it is better to believe that which is true, they often disagree about what is true in particular cases. Aristotle defined the human being as a rational animal. If we go by this definition, we conclude that the logic is indispensable for human beings to live according to their nature.
Many of our fundamental beliefs about the world around us are acquired in any way rather than through the use of reason, although we all recognize that our beliefs about the world and the events that occur in the same world are somehow linked. For example, if I believe that all dogs are mammals and all mammals are rational beings, it would make sense for me to assume that all dogs are rational beings. In this case, even those who (correctly) disagreed with my understanding of biological classifications could appreciate the consistent and reasonable way in which I used my erroneous beliefs as a basis to establish new beliefs.
In conclusion, we agree with the road following an argument but disagree with their points of departure and arrival. Ie, it is possible to distinguish valid from invalid arguments whether we agree or disagree with the content you express with such a reasoning. Put very simply, the logic is the discipline that studies this distinction by determining the conditions under which the truth of certain beliefs leads with certainty to the truth of other beliefs. Logic studies, therefore, the principles of correct reasoning.
In this subject we are studying the following concepts that underlie the intuitive approach just stated:
- Nature of formal languages and systems
- Lines of argument
If you are interested on reviewing some concepts and practising on your own, I have found these two web pages which contain well explained theory, exercises and games:
Francisco José Calzado Fernández, Aprende Lógica. Retrieved 2010, November 30, 17:35 pm, http://www.isftic.mepsyd.es/w3/eos/MaterialesEducativos/mem2003/logica/
Pedro Lanjarón (2009, January). La importancia de la Lógica. Retrieved 2010, December 3, 11:08 am, http://fistoria.blogspot.com/2009/01/la-importancia-de-la-lgica.html
Paul Newall (2005). Introducing Philosophy 4: Logic. Retrieved 2010, December 3, 12: 05 pm, http://www.galilean-library.org/manuscript.php?postid=43782
Katarzyna Paprzycka. Logic Self-Taught: A Workbook. Retrieved 2010, November 28, 16:30 pm, http://www.filozofia.uw.edu.pl/kpaprzycka/Publ/xLogicSelfTaught.html
© Euclides Ltd. Breve Historia de la Lógica. Retrieved 2010, December 5, 20:20 pm, http://www.euclides.org/menu/articles/article101.htm