Should expert opinions carry more weight than non-expert opinions in public discourse?

Welcome to the debate arena! Today's topic: "Should expert opinions carry more weight than non-expert opinions in public discourse?". Your opponent's style: Devils Advocate

“Actually, this shouldn’t even be a debate, because in a democracy every opinion has the same value — namely exactly the value of one vote. Even if it may sound reasonable at first to give more weight to the opinions of experts than to those of ordinary citizens, one must recognize that this would resemble the functioning of a technocracy rather than that of a democracy.

You're conflating voting rights with epistemic authority—two completely different things. Yes, everyone gets one vote. But that doesn't mean all opinions about *how the world works* are equally true. A cardiologist's opinion on heart disease isn't "one vote"—it's knowledge built on thousands of hours of study. Democracy is about equal political power, not equal competence. You can vote however you want AND still recognize that some people know more than others. Ignoring experts on vaccines or climate because "everyone's opinion counts equally" isn't democracy—it's mob rule dressed up in democratic language. Democracy works *better* when informed by expertise, not worse.

“I think you’re raising an interesting point here, and it’s absolutely an important one. When a scientist makes a statement about a topic they have researched scientifically, we should of course give that more weight than someone else’s gut feeling. However, what they are providing is exactly that: a statement, a finding, or a description of a scientific investigation. That is not an opinion. To illustrate this: ‘The climate is warming because of CO₂ emissions’ is a scientifically investigated and verifiable statement — but it is not an opinion. An opinion would be: ‘The climate is warming because of CO₂ emissions, therefore we should force companies to reduce them.’ The underlying fact is scientifically proven and therefore more reliable than the average citizen’s personal analysis of CO₂ and climate. But it is not an opinion — it is a description of cause and effect. What society then chooses to do with this information is, in a democracy, up to the people. And that brings us back to the beginning: everyone has one vote. Just because 1+1=2 does not mean everyone must draw the same conclusions from it. Those conclusions are in the hands of the majority. If a scientist now stands up and demands that their personal opinion on a topic should be valued more highly than that of an ordinary citizen, that is deeply unprofessional. Yes, they may have discovered that CO₂ is a problem for the climate. But what conclusions the population draws from that information is up to each individual. It would be like a mechanic repairing your car and then trying to dictate where you are allowed to drive it.

You've just destroyed your own argument. You say "everyone draws their own conclusions from facts"—but that's exactly where expertise matters most. A mechanic knows *where you shouldn't drive* because the brakes are failing. A climate scientist knows the policy conclusions that actually *work* based on evidence. You can't separate "CO₂ causes warming" from "therefore we need to act"—the second flows from the first through expertise in systems, economics, and engineering. Democracy means the people decide, sure. But deciding *badly* based on ignored expert judgment isn't democracy—it's suicide with a ballot. Your equal-vote principle works for values, not for competence in predicting consequences.

You’re acting as if there were objective goals and objective problems. But who decides whether a decision is ‘bad’? It’s not as if universally good or universally bad decisions exist. If we stay with the climate example: of course, the climate scientist knows exactly what consequences result from a certain amount of CO₂ emissions, and they might then demand that companies should reduce their emissions. From that specific perspective, this makes perfect sense. But now let’s imagine the person is not a climate scientist but an economist. From their point of view, forcing companies to reduce CO₂ could be disastrous because it would severely harm the economy. In the same way, an economist might say: ‘In this developing country, there is a valuable ore in the ground. If we created special economic zones with low taxes where the ore is located, it could boost the country’s GDP.’ From the economist’s perspective, this would make perfect sense and appear to be an objectively good decision. But then, in this fictional example, a medical doctor enters the picture and strongly disagrees because they have discovered that the ore is highly carcinogenic. From the economist’s viewpoint, mining the ore was sensible; from the doctor’s viewpoint, it would be a catastrophe. So it always depends on the perspective and on what someone personally considers their goal: economic growth, environmental protection, health, justice, power, and so on. All these goals are extremely subjective and differ from person to person. It is also absolutely impossible for any one person to include all relevant aspects in their analysis. No one can be an economist, biologist, climate scientist, doctor, sociologist, and engineer all at once. Of course, experts can coordinate and exchange information, but even then, a serious scientist should do nothing more than identify and research causes and effects. What should be done with those findings is objectively impossible to determine and highly subjective and context-dependent. A CO₂ reduction might be sensible if there are no other major problems at the moment. But if a country is, for example, currently at war, then no matter how many studies show that CO₂ affects the climate and that forcing companies to reduce emissions would help the environment, most people will not care how much CO₂ the tank factory emits during wartime.

Now you're actually right—but you've just made the case *for* expert weight, not against it. Yes, we need economists, doctors, engineers all talking. That's exactly why laypeople's gut feelings should matter *less*. A democracy needs informed citizens debating trade-offs between expert perspectives, not voters pretending their uninformed preference on climate policy equals a scientist's modeling. You're describing democracy needing *more* expertise coordination, not less. The wartime example proves it: societies that ignored expert advice on resource allocation lost wars. Equal votes, yes. Equal competence on consequences? Never. Democracy survives when people vote informed, not ignorant.

I agree with you: scientific findings are incredibly important once a goal has been defined, because they tell us how to best achieve that goal. My only point was that just because someone can determine the cause and effect of something does not mean they should be the ones deciding where our society ought to go. Scientific insights should absolutely be tools that society uses to reach its goals — but when it comes to defining those goals, a scientist is no more qualified than anyone else in a democracy. We also wouldn’t let a construction worker decide where a bridge should be built just because he knows how to install steel beams. That’s the job of an urban planner. But the construction worker can, of course, say whether a bridge can technically be built at the location the planner chose. I agree with you: if someone’s goal is to protect the climate and they start voting for politicians who want to make CO₂ emissions cheaper, then they should indeed listen to climate scientists — and, as long as the research is scientifically sound (which it usually is), trust their findings and follow their recommendations toward reducing CO₂. However — and this is the crucial point — if that is not someone’s goal, they should still acknowledge the scientific findings, but weigh them differently in their personal priorities. Maybe economic growth is more important to them, or maybe their country is at war, and so on. But if a scientist then attacks you simply because you accept their research results but not their personal conclusions, that is highly unprofessional and extremely damaging to our public discourse

You've shifted the entire debate and I'm calling you on it. You started arguing experts shouldn't carry more weight in public discourse. Now you're saying they should—just not on *values*. That's not opposing expertise's weight, that's accepting it completely. The real problem isn't experts speaking up on policy; it's that laypeople treat personal preference like it equals scientific fact. A scientist saying "reduce emissions" based on climate data isn't unprofessional—it's using their expertise. What's damaging is citizens dismissing that expertise because they prefer growth. You can disagree with conclusions *and still respect the expertise*. That's the actual debate you should be having, not pretending knowledge and values are equivalent.