Eltab
Lord of the Hidden Layer
Leading off the way you did, is not the way to achieve this goal. That feeds into the cycle of distrust and stubbornness, not break out of it.How do you convince a stubborn person they're wrong?
You are going to have to take the other folks' interests and complaints and concerns seriously, and address those. Find a way to fix (or at any rate ameliorate) their pain points, and they will work with you not against you.