Flawed Logics PDF Download

Logical fallaciesWhat is a Logical Fallacy, Exactly?-------------------All logical fallacies(34)-Examples-Simple Explanation------------------------The word "fallacy" comes from the Latin "fallacia" which means "deception, deceit, trick, artifice," however, a more specific meaning in logic (a logical fallacy) that dates back to the 1550s means "false syllogism, invalid argumentation."An Error in ReasoningOne of the earliest academic discussions of logical fallacies comes from the book Elementary Lessons in Logic: Deductive and Inductive, published by MacMillian and Co. in 1872 where the modern definition of logical fallacies is used: "the modes in which, by neglecting the rules of logic, we often fall into erroneous reasoning." Today, this basic definition is still used, and often abbreviated to just "an error in reasoning." It is not a factual error.The Difference Between Logical Fallacies and Cognitive BiasesIn the early 1970s, two behavioral researchers, Daniel Kahneman and Amos Tversky pioneered the field of behavioral economics through their work with cognitive biases and heuristics, which like logical fallacies, deal with errors in reasoning. The main difference, however, is that logical fallacies require an argument whereas cognitive biases and heuristics (mental shortcuts) refer to our default pattern of thinking. Sometimes there is crossover. Logical fallacies can be the result of a cognitive bias, but having biases (which we all do) does not mean that we have to commit logical fallacies. Consider the bandwagon effect, a cognitive bias that demonstrates the tendency to believe things because many other people believe them. This cognitive bias can be found in the logical fallacy, appeal to popularity.Everybody is doing X.Therefore, X must be the right thing to do.The cognitive bias is the main reason we commit this fallacy. However, if we just started working at a soup kitchen because all of our friends were working there, this wouldn't be a logical fallacy, although the bandwagon effect would be behind our behavior. The appeal to popularity is a fallacy because it applies to an argument.I would say that more often than not, cognitive biases do not lead to logical fallacies. This is because cognitive biases are largely unconscious processes that bypass reason, and the mere exercise of consciously evaluating an argument often causes us to counteract the bias.Factual Errors are Not Logical FallaciesTo illustrate this point, let's consider the availability heuristic, a cognitive bias that describes the tendency for one to overestimate the likelihood of more salient events, usually the result of how recent the memories are or how unusual or emotionally charged they may be. This bias can be demonstrated in believing that you are more likely to die in a plane crash than an automobile accident because of all the plane crashes you see in the news. As a result of this bias, one might argue: Plane crashes kill more people than automobile accidents. Therefore, it is safer to drive in a car than fly in a plane.This is not fallacious; it's factually incorrect. If it were true that plane crashes kill more people than automobile accidents, the conclusion would be reasonable. The argument itself does not contain flawed reasoning; it contains incorrect information. While we can say the reasoning behind the argument was fallacious, there is no logical fallacy present in the argument. Similarly, if I told you that the sun was about 30 miles from the earth and the size of a football stadium, I would not be committing a fallacy-but I would be a moron. Factual errors are not fallacies........