Worth Sharing: The genetic fallacy: When is it okay to criticize a source? | The Logic of Science

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Not new, but an excellent take on the issue.

Lashierarchy of scientific evidence, randomized controlled study, case, cohort, research designt week, I wrote a post on the hierarchy of scientific evidence which included the figure to the right. In that post, I explained why some types of scientific papers produced more robust results than others. Some people, however, took issue with that  and accused me of committing a genetic fallacy because I was attacking the source of their information rather than the information itself. They were specifically unhappy about my claim that personal anecdotes, gut feelings, counter-factual websites, etc. did not constitute scientific evidence. After all, how dare I assert that their opinions weren’t as valuable as a carefully controlled study (note the immense sarcasm). In reality, of course, my argument was not fallacious, and they were simply misunderstanding how the genetic fallacy works. This misunderstanding is, however, quite common and somewhat understandable. The genetic fallacy can admittedly be very confusing. Therefore, I want to briefly explain what this fallacy is, how to spot it, and when it is and is not acceptable to criticize the source of an argument/piece of information.

If you’re a regular reader of this blog, then much of this may sound very familiar. That is because I have already covered a lot of the key points in a previous post on ad hominem fallacies. The ad hominem fallacy is generally considered to be a type of genetic fallacy; therefore, the same general rules apply.

Source: The genetic fallacy: When is it okay to criticize a source? | The Logic of Science

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