diff options
Diffstat (limited to 'content/entry/thoughts-on-logic.md')
-rw-r--r-- | content/entry/thoughts-on-logic.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/content/entry/thoughts-on-logic.md b/content/entry/thoughts-on-logic.md index ae96238..c405ca5 100644 --- a/content/entry/thoughts-on-logic.md +++ b/content/entry/thoughts-on-logic.md @@ -36,7 +36,7 @@ Sometimes people think invalidating an argument by pointing out a logical fallac In some cases, it may not even be possible to provide evidence to disprove a claim, but that doesn't mean the claim is true. See Church of the [Flying Spaghetti Monster](https://www.spaghettimonster.org/) and [Russell's Teapot](https://rationalwiki.org/wiki/Russell%27s_Teapot). In debates about the existence of god, shifting of the burden of proof is an extremely common fallacy committed by theists. "You can't prove god doesn't exist!". Crucially, the burden of proof lies on the one making the claim. If I claim "There is a god", I have the burden of proving it. If I claim "There are no gods", then I have the burden to prove that. If I claim "There are probably gods", then I have the burden of proving that there are probably gods. If I claim "It's possible for a god to exist", then I have to somehow prove that it's possible, that there's a greater-than-zero chance of it occurring. So on and so forth for every claim. -The term "evidence" in this context isn't limited to hard, physical evidence. In [The Simulation Argument](https://www.simulation-argument.com), [Nick Bostrom](https://www.nickbostrom.com/papers) demonstrates that there is a 1 in 3 probability that we are living in a simulation despite not referencing any direct physical evidence of a simulated universe. It would be hard to say what direct evidence of a simulated universe would even look like. His paper doesn't depend on that many external observable facts about the physical universe either. The assumptions he does rely on to make his argument are fairly uncontroversial, which makes his strong result all the more surprising. It just goes to show there are many ways to meet the burden of proof for a claim, not all relying on hard physical evidence. +The term "evidence" in this context isn't limited to hard, physical evidence. In [The Simulation Argument](https://www.simulation-argument.com), [Nick Bostrom](https://www.nickbostrom.com) demonstrates that there is a 1 in 3 probability that we are living in a simulation despite not referencing any direct physical evidence of a simulated universe. It would be hard to say what direct evidence of a simulated universe would even look like. His paper doesn't depend on that many external observable facts about the physical universe either. The assumptions he does rely on to make his argument are fairly uncontroversial, which makes his strong result all the more surprising. It just goes to show there are many ways to meet the burden of proof for a claim, not all relying on hard physical evidence. ## Ad Hominem Fallacy There are several ways people get confused over the argumentum ad hominem. The [ad hominem fallacy](https://rationalwiki.org/wiki/Argumentum_ad_hominem) is a logical fallacy where you attempt to refute someone's argument by attacking their character. If you attack someone's character, that might harm their credibility. But, a person's credibility has nothing to do with the logical soundness of their argument. Soundness of an argument depends only upon the truth of the premises and the validity of the argument. I'm not saying credibility isn't important. It is. Credibility may influence your willingness to believe claims made by someone, but that's a separate issue. Your willingness to believe someone also bears no relation to the soundness of their argument or the truth of the claim they're making. The soundness of a logical argument is independent of the reputation of the person making it. @@ -53,7 +53,7 @@ There are several logical fallacies which fall into the category of what I call This one is the most widely-known. It simply means that many people believe something, so it must be true. There may be an evolutionary/psychological pressure to conform to what everyone else believes since it's perceived as the safest option. Several studies have been done showing that if you put a test subject in a group where the majority believes something, even if it's completely irrational, the subject will often just go along with it. Roughly [85% of the world's population believes in some form of god](https://www.wikipedia.org/wiki/List_of_religious_populations) or gods depending on how you ask the question. There's no evidence for the existence of any gods, so their beliefs are unfounded. In other words, just going along with what everyone else believes is a bad heuristic. ### Genetic -The genetic fallacy is whenever someone says something is good or true because it comes from a certain source. We can look at the media for example. While it is certainly true that some news sources are more reliable than others, the truth of an argument doesn't change depending on which news source makes it. This doesn't diminish the importance of having reliable sources of news. As a personal example, when [Nick Bostrom](https://www.nickbostrom.com/papers) releases a new paper, I make an educated guess that I'll find it interesting based on his previous work being interesting. But the new paper that I read won't be interesting because all his previous work is. It will be interesting because of the contents of the paper. If you pick good sources of information, then that's actually not a bad heuristic for truth. You will only end up with a bad heuristic for truth if you pick bad sources of information, such as Facecrook. Just remember that the source of information has no bearing on the truth of the information. I'm really beating this point to death, but it bears repeating. The only determining factors for the soundness of an argument are the truth of the premises and the validity of the argument. +The genetic fallacy is whenever someone says something is good or true because it comes from a certain source. We can look at the media for example. While it is certainly true that some news sources are more reliable than others, the truth of an argument doesn't change depending on which news source makes it. This doesn't diminish the importance of having reliable sources of news. As a personal example, when [Nick Bostrom](https://www.nickbostrom.com) releases a new paper, I make an educated guess that I'll find it interesting based on his previous work being interesting. But the new paper that I read won't be interesting because all his previous work is. It will be interesting because of the contents of the paper. If you pick good sources of information, then that's actually not a bad heuristic for truth. You will only end up with a bad heuristic for truth if you pick bad sources of information, such as Facecrook. Just remember that the source of information has no bearing on the truth of the information. I'm really beating this point to death, but it bears repeating. The only determining factors for the soundness of an argument are the truth of the premises and the validity of the argument. ### Nature The appeal to nature fallacy happens when someone says something is good, just or ideal because it's "natural". Two problems with that. For one, everything that happens is natural because we live in the natural world. But let's entertain the fallacy for a moment and define "natural" as things that aren't products of human intelligence. By that definition, Coronavirus is natural. Natural disasters are natural. It's even in the name. Lots of horrible things are natural. "Unnaturalness" is often used to argue against homosexuality. Other species of primate also show homosexual behavior, so homosexuality is natural even in non-human animals. To sum up, appealing to nature is a bad heuristic since it's hard to define what counts as natural and many natural things everyone agrees are natural are not good, while things people call "artificial", such as vaccines, are good. |