There is no general answer because by default, the majority wins.
For education, I would focus on a small number of communities and pool all resources to figure out what works.
Then use the desire of other communities for the hopefully existing improvements to spread the system.
Conspiracy theories are an outlet. People need a reason for why society is not as good as they feel it could be.
Most people blame the other political party. But that doesn’t work for everybody. The mind keeps looking until it finds a reason, and then it fades out all arguments that oppose it.
We laugh about conspiracy theorists, but most have the same mindset, just with socially acceptable topics.