H1N1 said:
Fred Reid actually has a good, related article on this, that may be of interest to the 'but, science' crowd:
http://www.fredoneverything.net/Scientism.shtml
If you make a statement like "the Theory of Evolution is wrong" then you are talking about science. In that scenario, a scientist is supposed to respond "as a scientist" to use Fred's idiom. "Science doesn't work that way" is exactly how a scientist is supposed to respond to deeply flawed criticism.
Fred's article is very good, if flawed. One of the central themes of the article about distinguishing science from non-science is very important, and he does a mostly good job of it. But it's important to note that nearly all of the actual criticism in that article is against "scientism" which is something that is also, for the purposes of the essay, defined by Fred himself.
Fred on Scientism and Evolution said:
Evolutionary theory of course says that traits that make for successful reproduction will flourish in a population. This makes sense and can be observed in many things. It fails badly in the case of homosexual men. As these produce no or few children, the selective pressure to eliminate them from the population would seem to be great. Yet they are not eliminated. Scientism cannot say that here perhaps is something not explained by the theory. That would shake the whole edifice. How does it manage this difficulty?
First, Fred has a simple logical mistake in this paragraph. Just because traits that make for successful reproduction will flourish in a population does not imply that only reproductively successful traits will flourish. That mistake aside, science absolutely can accommodate this, which is probably why Fred attacks "scientism". In fact, when you have an established theory, observations that at first seem to not fit that theory are often the most promising sources for new knowledge.
The huge flaw that philosophers and other non-scientists make when discussing these observations is seeming to believe that contrary evidence somehow automatically and immediately makes the entire field of study invalid and worthless, as if the issue at stake is winning an argument rather than advancing scientific knowledge. Fred falls into this trap as well, although he does a better job than most of toeing the line with his mostly careful distinction between science and scientism.
What actually happens is that contrary evidence usually invalidates only an isolated hypothesis that had been generated in the context of the theory, at which point scientists develop a new hypotheses that explain the observation then continue testing and eliminating hypotheses until you find one that works. Most often, any of the evidence that philosophers bring up to try and "disprove" evolution are really just disproving hypotheses that scientists eliminated a long time ago but persist in the public consciousness for various reasons.
For example, the question "why does homosexuality persist in a population if they (generally) fail to breed?" As far as I know, science does not yet have an answer to this. There are hypotheses, and lots of experiments and new observations have been uncovered in relation to this question, but very little has been confirmed. Fred mentions one hypothesis: homosexuality is caused by an as-yet-unknown pathogen. Greg Cochran makes a case for this hypothesis. That I can tell, he does not advocate for people to take this as an actionable
article of faith, rather as a basis for further study.
Fred said:
The biologist Greg Cochran says that homosexuality is a disease caused by a virus. Which virus is that? We don’t know because it has not been discovered. What is the evidence for it? Why, homosexuality. Round and round….
Again this is framed as a philosophical argument rather than scientific pursuit. The evidence pointing to a "gay virus" was described by Cochran in his blog and is not intended to be conclusive. The next step in science is to begin searching for the pathogen. If you never find it, and someone else finds and
confirms a superior explanation for homosexuality, then your hypothesis was wrong. If there is an actual argument here at all, it's about which hypotheses deserve more time, attention, and resources.
Fred said:
To amuse ourselves, let us assume that something physically inexplicable actually happened. Let us suppose that the shade of Elvis appeared in my living room, sang Blue Moon over Kentucky, and disappeared in a flash of green light. Remember, for the moment we assume that it really happened. How could a scientist, or the science, handle this?
Note that Fred's answer abandons the careful distinctions he made earlier between scientists "as scientists" and just normal people. All his answers are from normal people or scientists as normal people, not scientists as scientists. Scientists as scientists have a very particular answer to this kind of question, which I'll describe below.
I could tell my friend the astrophysicist about it, but he would assume that I was joking, lying, or delusional. I could tell him that my neighbors heard it, but he would say that it was a recording. I could say that people walking in the street saw it though my window, but he would say that it was an Elvis impersonator. The event not being reproducible, I could not possibly convince him—even though it had actually happened.
In all of these examples, the fact that his friend is an astrophysicist is irrelevant. The person is responding as a person. The real answer is that a scientists can not answer this question or even generate reasonable hypotheses about this due to a lack of evidence and a lack of existing knowledge that could provide reasonable explanations.
What science could do here is attempt to generate a model of physics that could account for spontaneous appearances of Elvis in Fred's living room. But if that never happens again and nothing like it ever happens again, and this alternate model of the universe doesn't provide any
otherwise useful knowledge, then science is not going to care about its existence. The paper will be buried under reams and reams of other research papers that never amounted to anything, either. Ultimately, the truth of what happened is
irrelevant.
Of course, most scientists are going to look to the future, do a quick risk/effort/reward analysis, and decide that investigating the appearance of Elvis in Fred's living room is not a good way to spend their time, no matter what they might actually believe.