Instead of trying to argue for the point, take it from a point of view of trying to be a teacher and everyone reading your post is a student.<p>Only ideologues are going to demand phd thesis levels of sourcing for an anonymous forum; but if you source well enough... this ratio becomes unimportant.
I don't know, but the ratio will be much higher when judged by others than with self-identification. No one considers himself an ideologue. Also, people on the right (left) are more likely to identify people on the left (right) as ideologues.