Keep arguments away. If someone says Earth is square in shape, you may not agree and you should not agree but you should not argue too. Avoid it. Just say, ‘may be, you may be correct’ and move out of such discussion.
My FB sister Meenakshi says that if there are two different views then to avoid conflicts at least one should become silent. And the one, who becomes silent, will be wise. So be wise, avoid arguments, become silent and be happy.