The Sweet Spot of Climate Alarm, and Why Nobody Aims for It

How frightened should people be about the climate? The question sounds like it has a moral answer. It has an engineering one, and the engineering answer explains why public discussion of the subject is in the state it is in.

Too Much and Too Little

Alarm people too much and you get a specific and well-documented response: not action, but resignation. A population that believes the catastrophe is certain and enormous becomes a population of passive accepters of its fate. Why change anything if nothing can be changed? The doom is so large that the individual contribution disappears into it, and people do what people do when the stakes are unbearable and the levers are tiny: they look away.

Alarm people too little and you get the opposite failure. If the danger is modest, there is no hurry. The response can wait for the next budget, the next election, the next technology. And it can be modest too, because a modest problem does not justify an immodest solution.

So there is a level of alarm that produces the most action, and it is neither the maximum nor the minimum. It sits somewhere in the middle, at the point where people believe the danger is real and serious and also believe that what they do matters. Both beliefs are required. Remove either and the action stops.

The problem is that nobody knows where the middle is, and, worse, nobody is trying to find it.

The Seesaw

Here is why.

Picture public opinion as a seesaw. You look at it and see that it is tilted far from where you think it should be. Too many people are complacent. So you decide to push the other way. The question is: how hard?

The answer almost everyone gives is as hard as I can, and the reasoning is not stupid. There are many people on the other side. Your push is one among thousands. If you push gently you will not move anything, so you push with everything you have, and you say things that are stronger than what you actually believe, because the strong version is the one that might register.

Every participant reasons the same way. The complacent side, seeing the alarmists exaggerate, exaggerates its complacency in return. The result is a discussion conducted entirely at the extremes, by people none of whom hold the position they are arguing. We radicalise our message far beyond our actual belief in order to tilt the aggregate, and the aggregate is made of people all doing the same thing.

The seesaw does not settle at the sweet spot. It swings between the two failure modes, and the public, hearing only the extremes, either panics or shrugs.

Why This Is a General Problem

Climate is the example but the mechanism is everywhere. It is how we argue about immigration, about crime, about the economy, about every question where the goal is to move an opinion rather than to describe a fact.

And it interacts badly with something else we know about ourselves, which is that we are tribal. A discussion conducted at the extremes is a discussion in which the positions are far enough apart that they become identities. You are not someone who holds a view about emissions. You are one of them, or one of us, and the view comes with the membership. Once that has happened the sweet spot is unreachable, because nobody is allowed to stand in the middle, and anyone who tries is treated as a traitor by both sides.

The extremes are not merely an inaccuracy. They are a machine for producing the tribalism that makes the inaccuracy permanent.

What Would Fix It

I do not have a full answer, and I distrust anyone who does. But the shape of the problem suggests the shape of the remedy.

The seesaw dynamic exists because each participant is trying to move an aggregate through a channel with very little bandwidth. Public discussion transmits slogans, not positions, so you shout the slogan. If the channel carried more, so that a nuanced position could be stated and heard as nuanced, the incentive to exaggerate would weaken, because the moderate statement would no longer vanish.

That is partly a media problem and partly a political one. A system that decided questions rather than selecting sides would give people a reason to state what they actually believe about a specific question, because that is what would be counted. Under the current arrangement, what is counted is which side you are on, and so that is what people signal, as loudly as possible.

Until then, the honest thing an individual can do is small but real: say what you actually think about how bad it is, at the strength you actually think it, and accept that you will be outshouted. The sweet spot is only findable by people willing to stand in it.