It was to quit wasting his time trying to correct their mistakes when they weren't ready to accept criticism.
Do you think you've changed many votes with your corrections? Even in arguments you won?
The most effective way to change an individual's opinion is to calmly provide facts to them without commentary or judgement. No insults, no judgement, no snark. Just calmly engage with their points and empathise with them. Most opinions are formed without knowing all the facts. Presenting facts without attacking their ego is the best path for changing an opinion.
This works best on unfamiliar topics people don't yet have strong feelings about. With opinion formation, the side to set the first emotional frame has the advantage. This is why in a referendum campaign it's so critical your message reaches voters before the other side can define the ballot question.
Other things I learned
- Good marketers in politics understand psychology. Repeat exposure better encodes a message into memory. For political ads this means repeating the same key phrases/words over and over again, to a degree you and I would find weird, to ensure you encode them into the viewer's memory. With enough repeat exposure, people feel like the ideas are their own.
- Never repeat your opponent's framing of a lie. To debunk a lie: use a "truth" sandwich. State your truth first -- first frame gets the advantage. Next describe the lie in less incendiary words, debunk it, then repeat your frame on the issue repeatedly.
- Politicians start every day with coordinated key talking points for media interviews because message repetition = encoding.
- Referendum ads are particularly crazy because they have no candidate reputation to protect. They do not need to be reasonable or respectable. A referendum ad's sole purpose is to persuade with the most emotionally resonant messages it can to encode key messages/frames of thinking. Being controversial just helps to create more exposure and people seeing your message. If everybody in the media is "debating" the merits of your message frame you are winning. People vote on the issue, not on the campaign team. E.g. If an ad says X will lead to extremist neo-nazi soldiers goose-stepping the streets, people will scoff at the hyperbole while it still subconsciously encodes into them that maybe I don't want something that risks instability.
- Politics is tribal and people follow the support signals sent by elites on their favoured side. Powerful elites speaking out in favour or against something/someone greatly changes its support among coalitions.
I honestly think a lot of the flat earther types in particular are basically trolls and/or enjoy being stubborn/argue about common knowledge, for no other reason because they can.
Another religious friend became a 9/11 truther and Elon-stan (post cave diver).
For a time, I honestly believed the Earth may be only 6K years old because of the magic sky being and similar indoctrination.
Thats the thing. We never really know if there will be consequences. If a flat earther became president what would be the consequences? Will we still have AC in the summer and heat in the winter, food on the table etc? Its fruitless going down the rabbit hole based off "what if". Look at the last US election. If Trump becomes president democracy is dead! I think our (assuming ur American) is the strongest its ever been and I didn't even vote for the guy.
What if a climate denier became/becomes president? What would be the consequences?
And not just on the planet but more locally: the folks that have to deal with hurricanes or wildfires? What happens to insurance rates? What happens if we stay very dependent on petroleum, and oil prices spike? What happens to people's cost of living (esp. food, which is transported by truck and use oil in fertilizer)?
Um.
What?
As a conservative-leaning registered Republican, I think Trump has brought the US the closest it's been to self-destruction since the Civil War.
His administration has authorized heinous human rights violations repeatedly, and has prevented "law enforcement" agents who killed innocent civilians from being brought to trial multiple times:
https://en.wikipedia.org/wiki/Killing_of_Ren%C3%A9e_Good
https://en.wikipedia.org/wiki/Killing_of_Alex_Pretti
The administration has violently pushed away most of its historical allies, and is going to enjoy the privilege of trying to stumble through the world on its own for quite a while.
The administration got the US embroiled in an utterly stupid, optional war that was guaranteed to have the harmful results it has: https://acoup.blog/2026/03/25/miscellanea-the-war-in-iran/
The economy looks good on paper, but that's almost entirely due to the current genAI bubble, not any intelligent economic choices by the president's office.
Most recently, the utterly idiotic ruination of the reflecting pool in DC, and subsequent insane claims that it was intentionally destroyed by the administration's critics is emblematic of the stupidity and self-destruction inflicted on the nation by President Trump. It's a small thing, compared to many of the issues, but it illustrates the harmful behavioral patterns in a crystal-clear manner:
https://en.wikipedia.org/wiki/Lincoln_Memorial_Reflecting_Po...
I think there are multiple things here that need to be disentangled. The first is that just because science "proves" something that doesn't mean the political, civil, or economic path is nearly as clear cut. While there certainly are people who just deny these things outright there's also the camp that accepts the scientific result but disputes how to deal with it as a society.
Second I've seen an alarming rise in what I would characterize as scientism, a belief structure around science itself where the "acolytes" of science do not understand the science themselves, but use it to reinforce their own worldview in the same way that deniers (heretics really) use other sources to reinforce their worldview. I have seen this play out within my own social circle as people will defer to experts as if they are a clerical class with divine authority to determine ultimate truth. To give an example in a much less controversial arena, how often have you witnessed people adopting fad diets because the "science" shows X is good even though the actual backing papers, that no adopter has read, are much more murky at best? This is an understandable consequence of having a limited lifespan where not everyone can know everything therefore heuristics must be used to comprehend the world, but the flexible heuristic which can lead to a change of opinion can be swapped out for a rigid belief that permits no change of opinion unfortunately.
Last I think this ultimately stems from what F.A. Hayek called constructivist rationalism[1], the idea that we can rationally construct our own social order. I share your own concern about mistakes that affect all of us specifically regarding philosophies that adopt constructivist rationalism such as the family of collectivist ideologies (socialism and the like) which are currently on the rise. My conclusion is that civilizations will evolve according to the culmination of all individual actors' actions and I personally have a limited role to play, although I am a classical liberal. Your last question unfortunately can lead some to conclude that a much more dictatorial society is necessary to produce a result that may itself not be possible and instead lead to an even worse result than the alternative.
[1] I highly recommend The Fatal Conceit by Hayek if you want to challenge assumptions your own worldview likely rests on without even knowing it.