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Ed F

What Fallacy Is Thinking It Won't Happen...

What's the best fallacy fit for thinking that because something has never happened before, it won't happen in the future?

(e.g., I've never been robbed, or never gotten a speeding ticket so therefore I won't in the future).

One website called this "Converse Accident" but I think that term is generally used to refer to Hasty Generalizations.

asked on Tuesday, Feb 01, 2022 04:47:17 PM by Ed F

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Shawn writes:

Different answers will be given here, but this is an example of a Non Sequitur in that the conclusion does not follow from the premise.

posted on Tuesday, Feb 01, 2022 04:53:34 PM
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Ed F writes:
[To Shawn]

I agree it's a Non Sequitur but I'm looking for something more specific.

[ login to reply ] posted on Tuesday, Feb 01, 2022 05:03:38 PM
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Destone writes:
[To Ed F]

What do you mean more specific? What detail is not clear enough?

[ login to reply ] posted on Tuesday, Feb 01, 2022 06:44:17 PM
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Ed F writes:
[To Destone]

"Non sequitur" is defined by Dr. Bo's book as "When the conclusion does not follow from the premises."  Thus any fallacy with faulty reasoning is a non sequitur.  I was looking to see if there's a specific non sequitur that describes the kind of thinking--"this bad thing hasn't happened before so I don't believe it'll happen in the future."

[ login to reply ] posted on Tuesday, Feb 01, 2022 10:36:27 PM
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TrappedPrior (RotE) writes:
[To Ed F]

There probably isn't. Any error in reasoning where the conclusion does not follow from the premises, and is not covered by an existing named fallacy, may be referred to as a non-sequitur. It also applies to inferences where the two propositions have nothing to do with each other.

E.g. "I am human, therefore I like ice cream." Liking ice cream has nothing to do with being human. There's no "specific fallacy", it's just a standard non sequitur.

[ login to reply ] posted on Wednesday, Feb 02, 2022 11:43:12 AM
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Ed F writes:

I think it's related to Normalcy Bias-- the belief (bias) that bad things won't happen to me.

posted on Tuesday, Feb 01, 2022 04:55:32 PM
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Ed F writes:
[To Ed F]

Also, Optimism Bias

 

[ login to reply ] posted on Tuesday, Feb 01, 2022 06:13:14 PM
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Shawn writes:

As I said, the argument covers many different kinds of fallacies, and these fallacies tend to overlap. It could also be the fallacy of making an Argument from Ignorance in that "the assumption of a conclusion or fact is based primarily on lack of evidence to the contrary."

When you say, for example, that you will never be robbed in the future or that you will never get a speeding ticket, it cannot be 100% proven that your assumption is false because there is no evidence to the contrary. 

posted on Tuesday, Feb 01, 2022 05:18:18 PM

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Answers

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Bo Bennett, PhD
3

This would be the process of induction. I am not sure how fallacious this is because the quality of  inductive reasoning exists on a continuum. For example, if I choose 10 red marbles in a row from a jar, it would be reasonable to say that the next one will be red as well. It is less reasonable if I chose 5 initially and even less reasonable if the number is 2.

Now, if I have never been robbed in my 50 years on this earth, and I have maybe 40 more years to go, what is the probability that I won't in the future? If I say I "certainly" won't (0% probability), I would be using inductive reasoning poorly—a problem more with statistical thinking rather than reasoning. If I said I "probably" won't be robbed, that may be accurate.

The speeding ticket example is even less problematic because if one is a slow driver, they are likely to remain a slow driver and never get a speeding ticket.

The real problem is in expressing the certainty when it should be an expression of probability (perhaps we can say this is a fallacy: alleged certainty ).

answered on Tuesday, Feb 01, 2022 06:39:15 PM by Bo Bennett, PhD

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Ed F writes:

In your discussion of alleged certainty, I thought your third example was amusing since I didn't know what year you wrote this:

There’s no question that our president is a major idiot.

Some things never change.

posted on Tuesday, Feb 01, 2022 11:05:38 PM
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Bo Bennett, PhD writes:
[To Ed F]

Doesn't matter. There isn't a time in American history when some people didn't say the sitting president was a major idiot. Thanks to our freedom, we can say this without being killed :)

[ login to reply ] posted on Wednesday, Feb 02, 2022 05:24:32 AM
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Arlo
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Going back to the basics we use on this site, for there to be a fallacy there has to be an argument of some sort.  Taking the robbery example, there really isn't an argument beyond it never has happened, therefore it can never happen.  That's a statement of belief ... and, I suggest, a false statement.  Expressed as a series of propositions and a conclusion, an argument from this situation could look something like this:

Premise 1: If something (being robbed) has never happened before, it won't happen in the future.

Premise 2: I've never been robbed.

Conclusion: Therefore, I won't be robbed in the future.

Expressed that way, there doesn't seem to be a logical fallacy, just a questionable Premise 1.

Of course, a more detailed version of the argument might go like:

P1: Being robbed is more likely if one puts oneself in situations that encourage robbery (walking alone down dark alleys, hanging out in the middle of the night in a "sketchy" part of town, flashing valuables, etc. ...)

P2: I always avoid situations that encourage robbery

P3: I've never been robbed.

Conclusion C1: "I won't be robbed in the future.", would present a logical fallacy – a non sequitur because actually being robbed in the future doesn't follow through this argument.  (Note that P1 doesn't talk about actually being robbed, it talks about the likelihood of being robbed.  Something new that wasn't a thread connecting any of the premises has been introduced out of nowhere at the conclusion.)

Conclusion C2: "I'm not likely to be robbed in the future.", would follow from the premises and, assuming we accepted P1 and P2 as true, we'd be justified in concluding that the likelihood of being robbed in the future is low.  (That's what car insurance companies do when they use past driving history in determing the rate to charge clients.)  Perhaps it's interesting to note that P3 (never having been robbed in the past) doesn't really plan into this argument – because even with low likelihood, events can happen.

As others have mentioned, if one were conducting a study about robberies, discovering how many robbery victims have been robbed in the past might help form an inductive conclusion about what leads to being robbed or how to prevent robberies; however, it likely wouldn't support the claim that to be robbed, one must have been robbed in the past.

However, the bottom line for me is that I don't understand the logic string involved in "is hasn't happened before; therefore, it won't every happen" ... and, in my experience, it doesn't apply.

answered on Wednesday, Feb 02, 2022 11:25:42 AM by Arlo

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Bob
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Hoyle's Fallacy: A fallacy of logos, falsely assuming that a possible event of low (even vanishingly low) probability can never have happened and/or would never happen in real life

answered on Saturday, Nov 18, 2023 11:06:19 AM by Bob

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VINICIUS SODRÉ
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I think because of this example I just created a new type of fallacy, the False Induction fallacy.

 

Does anyone disagree?

 

Thank you!

answered on Sunday, Nov 19, 2023 03:15:29 PM by VINICIUS SODRÉ

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