What is exactly "personal incredulity fallacy"?
Posted: Sun Aug 16, 2020 3:48 pm
I wanted to hear your thoughts, what exactly is "personal incredulity fallacy"? The basic form of it is "I don't understand something, therefore it probably isn't true.". However, is it always fallacious? Or is it, much like the argument from authority, sometimes justified.
Take three examples:
1) I don't understand how airplanes work, therefore they probably don't work.
This is an obvious example of personal incredulity fallacy.
2) Bombs appear to contradict the second law of thermodynamics, which says that a body can't convert its internal energy into mechanical work. That's what bombs are supposed to do. They receive very little energy that triggers them, and they turn their own internal energy into loads of mechanical work. Therefore, bombs probably don't exist.
This is wrong, but is it personal incredulity fallacy? When I was saying that, I thought it wasn't because "bombs contradict the second law of thermodynamics" is an objective claim, it doesn't talk about my mind but about external world.
3) I am studying computer science, and I don't understand how there could be antivirus software that's both effective against malware and doesn't have a huge number of dangerous false positives. System-critical software behaves very similar to rootkits, compilers behave rather similar to viruses and encryption tools behave similarly to ransomware. And from personal experience, once Microsoft Defender incorrectly identified my compiler as a virus. Therefore, the antivirus software probably can't work well and any real antivirus software will do more harm than good.
Is this type of reasoning also personal incredulity fallacy? I'd argue it's not, for the same reason appeal to the scientific consensus isn't the appear to authority fallacy.
Take three examples:
1) I don't understand how airplanes work, therefore they probably don't work.
This is an obvious example of personal incredulity fallacy.
2) Bombs appear to contradict the second law of thermodynamics, which says that a body can't convert its internal energy into mechanical work. That's what bombs are supposed to do. They receive very little energy that triggers them, and they turn their own internal energy into loads of mechanical work. Therefore, bombs probably don't exist.
This is wrong, but is it personal incredulity fallacy? When I was saying that, I thought it wasn't because "bombs contradict the second law of thermodynamics" is an objective claim, it doesn't talk about my mind but about external world.
3) I am studying computer science, and I don't understand how there could be antivirus software that's both effective against malware and doesn't have a huge number of dangerous false positives. System-critical software behaves very similar to rootkits, compilers behave rather similar to viruses and encryption tools behave similarly to ransomware. And from personal experience, once Microsoft Defender incorrectly identified my compiler as a virus. Therefore, the antivirus software probably can't work well and any real antivirus software will do more harm than good.
Is this type of reasoning also personal incredulity fallacy? I'd argue it's not, for the same reason appeal to the scientific consensus isn't the appear to authority fallacy.