It has been my experience that a person can say almost ANYTHING in an open forum, as long as it is phrased in a way that maintains the dignity of all parties involved in the discussion.

For example, saying "only a fool sees it that way... " denigrates the person who expressed the opinion under scrutiny, and therefore you can bet a fight will start.

However, if the statement went something like "there are several schools of thought on that topic... and the one I adhere to goes like this..." you can say your piece, and the introduction implies that the other person's opinion is also held by many other people.

Messing with people's dignity is bad juju. A well-known psychological study was conducted in which people were put in various situations where their dignity was violated. Some of the time it was in private, and some of the time it was in front of others. The study showed that people sometimes overlook a slight made in private, but a public slight almost always leads to some face-saving reaction, usually unpleasant and sometimes even violent.

Communication is necessary in society. We need to let people know where we stand on issues, even controversial ones. The trick is in doing it in a way that is respectful of each other.

https://www.dropbox.com/sh/ey71h8ep047758h/AAC12jNM0Hz9Q8zsh5iDeqNHa?dl=0