Yes! This is exactly what I had in mind. HPMOR described special exercise that Harry tried on Chaos legion - one person is trying to say something obviously true, like "grass is green", or "sky is blue" while others play as good as they can repultion and horror. This in theory should familiarize people with feelings assoсiated with lonely dissent and help them notice this biasing force when they actually will get into similar situation.

This might even be a good idea since for example in russian military every day when someone is instructed on his daily duties on guard - simulation of extreme situations is necessary part of this instructions.