Definition of Illogic

Let’s think of illogic like putting together a puzzle with pieces that don’t fit. It doesn’t make a complete picture because the pieces can’t work together the right way. Illogic is when our thinking or arguing doesn’t match the rules of good reasoning, known as logic. Logic is the guideline that shows us how to think in clear, straight paths to conclusions that make sense. It’s similar to having a rule book for playing a game correctly. When we say something is ‘illogical,’ it’s like saying that someone is not playing by the rule book and their game is all messed up because of it.

Let’s say your friend tells you that all cars must be red because their car is red. This doesn’t make sense, right? That’s illogic in action. Logic would tell us that cars can be many different colors, whether your friend’s is red or not. A logical statement is based on evidence and sound thinking; illogic is when those pieces are missing or don’t fit right in our thoughts or discussions.

How to Guide: Trying to spot illogic is about questioning and thinking critically. Imagine you’re a detective examining a case, and you use logic as your tool to figure out if the pieces fit together. This means checking if statements connect the right way, if the conclusion really follows from the start, and if arguments are based on real facts or just guesses. Searching for these clues can help you navigate through illogic.

Types of Illogic

  • Fallacies: Fallacies are errors in reasoning. These wrong turns in our thinking include many types, like when someone attacks the person making an argument, called ad hominem, rather than the argument itself. Another is the strawman fallacy, where someone’s point is twisted into something much easier to argue against than what was originally said.
  • Cognitive Biases: Cognitive biases are like shortcuts our brains take that lead to faulty conclusions. A common one is confirmation bias, which happens when we only see or believe things that support what we already think, ignoring anything else that doesn’t.

Examples of Illogic

  • If someone says “I’m the best basketball player because I’m the tallest,” this is illogic. Being tall might help you in basketball, but the best player also needs skills, practice, and teamwork, not just height.
  • Believing a black cat crossing your path is bad luck is illogic. This superstition doesn’t have facts to back it up; a cat’s color doesn’t have the power to change your day.

Why is Illogic Important?

Knowing about illogic is super handy because it’s like having a filter that separates the good info from the bad. It’s important for making choices that are good for us. For instance, when ads say a drink will make you popular, using logic helps us see there’s no real connection between what you drink and popularity. It can save us from falling into traps of wrong thinking.

This skill is also key for convincing others with real, strong arguments instead of weak ones. You don’t want to build a case on shaky ground, whether in a debate club or convincing your parents why you deserve a later curfew. Solid arguments can change minds and even help create fair laws or discover new things in science. In everyday life, recognizing illogic can save us from buying useless stuff, believing in silly rumors, or making unfair judgments.

Related Topics

  • Critical Thinking: This is about evaluating information and arguments carefully to decide what to believe or do. It’s similar to being a good logic detective in your everyday life.
  • Cognitive Psychology: This field of psychology studies how we think, remember, learn, and solve problems. Understanding illogic is part of figuring out why we sometimes make thinking mistakes.
  • Philosophy: Philosophy asks big questions about life, knowledge, and values. Illogic comes into play when philosophers assess arguments and ideas to see if they hold up under scrutiny.
  • Rhetoric: Rhetoric is the art of effective speaking and writing. Knowing about illogical arguments can help you be more persuasive and spot when others are not making sense.


Illogic is what happens when our brain takes shortcuts that don’t really work, or when we play the ‘game’ of reasoning without following the rules. But, by tuning in to how logic works, we can get better at avoiding these mental mishaps. It helps us make sense of a world that’s full of mixed-up info, sort of like finding the best route through a maze. Learning to think logically is super useful, making it possible to make better choices and understand the world more clearly. So whenever we’re faced with decisions or debates, being able to sort out illogic is like having a secret weapon for reaching the truth.