I've had plenty of my opinions changed, and I've changed many of my friends and families opinions numerous times. I once even managed to change someone's opinio

I've had plenty of my opinions changed, and I've changed many of my friends and families opinions numerous times. I once even managed to change someone's opinion about gun-control, on the internet. Rational arguments, a bit of rhetorical ability, and persistence are surprisingly effective. The problem is the persistence part requires multiple interactions over months or years, so it's hard to study.