There is a trend I’ve noticed in debates (especially online) where it is put forth that who you are disqualifies you from making any statement on a controversial issue. Those familiar with logic will recognize this as the genetic fallacy, that a statement’s origin can determine whether it’s true or false. And yet it persists in the public square. Here are some examples, some of which I’ve been personally challenged with: you can’t speak about human behavior unless you’re a psychologist; you can’t speak about science without being a scientist; you can’t speak about abortion unless you’re a woman; you can’t speak about legal issues unless you’re a lawyer, and on and on. Since this is often brought up, let’s look at this in more detail.
First off, does someone trained in a particular discipline and working in that area have an advantage over the typical layman in discussing that topic? Certainly, but this doesn’t preclude other people from forming reasonably valid opinions on the same topic. For instance, if you want to know whether your office building can support a heavier rooftop air conditioning unit, by all means, call an engineer like myself to investigate that for you. We’ll apply our knowledge, experience, and specialized analysis software to your situation to work out the safest, best solution to the problem. But if you’re in your office, and the roof is starting to visibly sag, the sheetrock on the walls is starting to buckle inward, and you can hear loud noises as bolts suddenly snap, please, don’t think you need to wait on an “expert” to tell you that you need to get out! That situation doesn’t require an expert to say “Run!” There is a difference between needing the fine-tuned conclusion that a subject matter expert can bring to a topic and needing to establish the broad, basic solution that can be deduced by anyone applying valid reasoning to the evidence at hand. In the roof collapse example, it doesn’t really matter to the occupants whether the roof beams are failing due to lateral-torsional buckling or by block shear at the column connection. They can look at the ceiling getting closer to their heads, and listen to the building, and reasonably come to the same basic conclusion as the engineer: this building is collapsing and we need to evacuate. Likewise, you don’t need to be a psychologist to recognize the guy trying to run people off the road has some serious anger issues he needs to deal with. And lawyers, despite their expertise, actually don’t decide the guilt or innocence of a person charged with murder. They can only explain the case; average citizens on the jury make the decision. This idea that only experts on a topic can speak on any level about that subject leads to blind faith in those experts, and is really a forfeiture of our responsibility to dig deep and understand the issues we face. Please understand, this is a standard I hold myself to as well. If you hire me as an engineer, and I make some crazy-sounding recommendation that I can’t explain any basis for, don’t blindly trust me either – by all means, call me out on it.
Something else to consider is that amateur enthusiasts often develop extensive knowledge in those areas that attract them. For example, I don’t often have to deal with liquefaction as a design consideration, but someone whose house collapsed in an earthquake because it was built on susceptible soil may devote their life to learning everything they can about liquefaction mitigation. Even though they may not have the engineering credentials that I do, I might still do well to heed what they say about that topic. I’d want to verify how they arrived at their conclusion, but we should never discount someone’s statements simply because of the person making the statements. You see, ultimately, the objective nature of truth determines the validity of the message, not the qualifications of the messenger.
Often, when I get this kind of pushback, the person I’m debating ironically also doesn’t meet the qualifications they demand of me before I can speak on the topic. By their own standard, they shouldn’t be voicing their opinion either. But typically, this is just a tactic for attempting to shut down the conversation. For example, one time, an abortion supporter told me I couldn’t comment on anything about abortion because I wasn’t a woman. And yet, the Supreme Court justices who ruled in favor of abortion in 1973’s Roe v. Wade case were all men. The difference? Only that they were agreeing with her position.
Are we free from the duty of making informed decisions? Can we just “leave that to the experts?” Can we ignore the claims of those who aren’t experts? Not as Christians, we can’t. The Bible tells us to “Examine everything carefully; hold fast to that which is good.” That may surprise some who assume the Bible demands a “blind faith” or a “leap in the dark”, but we actually aren’t allowed to check our minds at the door. We need to study the evidence, reason through the implications, and make the wisest, most discerning choices we can, in whatever the matter is at hand, even if we’re not experts.
 1 Thessalonians 5:21, NASB.