Still I'll disagree in that I've found people just find you more of a jerk for having to try to convice them their wrong in both places when they dont want to change their mind or their thoughts, or the way they think.Its easier to just let them bask in their ignorance, or denial and let them learn the hard
way that their not always going to be right. Personally its hard for me to see people I like and care about keep such thoughts, but its seriously strains relationships having to always be right, proving the other persons logic is faulty, or have the last word in otherwise. Take it or leave it its up to you.
Look at the famous philosophers, Galiao for example was threatened with death and kept from recieveing his last rights (upuntil recently anyway) because he could mathmaticly disprove what the bible said/ the most popular ideas at he time. That our solar system and planet were hielosyentric(revolved around the sun) and not geocentric( everything revolving around the Earth). You cant even in person make people think what they dont want to, or are not ready to think and accept.