A very common logical fallacy in debating is called a hasty generalization, also known as the “general rule” fallacy. In fact, this is arguably the most common logical mistake that is made by novice debaters! In this article, we will look at some examples of the fallacy, how you can hopefully avoid making it yourself – and how to respond when one of your debate opponents is guilty of making a hasty generalization.
The hasty generalization fallacy is an argument that makes a generalized claim based on a specific case or example. So a speaker will claim that because something has been known to happen, or indeed happened to them, that it is therefore a common or typical scenario in similar situations.
The problem with this type of argument is that even if something has been true in one case, some cases, or even most cases, that doesn't mean it will always be true in all circumstances.
This logical fallacy most commonly occurs when an opponent argues using personal examples or anecdotal stories as their only evidence for general claims. For example, a debater might say the following:
“Banning zoos is necessary because the risk of animals escaping is a significant one. There was a case in 1998 where a lion escaped from a zoo and killed two people before being hunted down and captured. This shows that animal escapes are a serious problem that can only be solved by the abolition of zoos.” The speaker may have managed to show that animals escaping from zoos is a possibility, but not that it is a serious problem – that is a generalization, and a hasty one at that!
The first rule of avoiding making hasty generalizations is to avoid using personal examples and anecdotes wherever possible. This is just about permissible when you are a young debater starting out in an elementary school debate class, but by the time you are thinking of being more competitive and participating in tournaments, you should no longer be using personal examples – because it is very easy to fall into the trap of making a hasty generalization based on your own experience.
Second, when using examples, you should always try to be at pains to explain why the example is representative or typical of the situation. You should include a link in your argument from the example to reasoning behind the claim.
If you can’t link your example to some strong reasoning, then at the very least – have more than one example! Multiple examples will at least make your case studies more persuasive to the judge.
First of all, if you hear a hasty generalization from your opponent, call it out! The judge should be made aware that the other team is using examples in place of an actual argument. This is one of the rare situations where simply labelling something as a hasty generalization goes a long way towards responding to it.
Once you have done this, though, then you should follow up by explaining why the example they have raised is not representative or typical of the situation – or, alternatively, why it doesn’t mean they should vote for the other side. You should also give one or two counter examples of your own, to disprove their logic.
So, in the example above, you would start by pointing out that your opponent is guilty of a hasty generalization. You would note that their example is a quarter of a century old, probably precisely because serious incidents like this are very rare. You would clarify to the judge that animals don’t often escape from zoos and that when they do, they are usually recaptured quickly and without serious injury to humans. Finally, you could point out that even if animal escapes happen, so too do attacks by wild animals that have nothing to do with zoos, and so they cannot possibly constitute a serious reason for banning zoos altogether.
In this article we’ve introduced some key features of the hasty generalization fallacy, hopefully given you some tips for avoiding it, and dealing with it when others are guilty of it. It’s a very common mistake in reasoning so don’t be disheartened if you find yourself making it from time to time. With practice, it’s something you will soon get into the habit of avoiding.