Its true in politics as well. Generally arguments are pointless and only deepen the ruts if beliefs are firmly held.
People that drastically change their views may have been hiding something that allows them to make the change abruptly. Some good advice given in Shakespeare's Hamlet works here, "To thine own self be true."
In the movie The Matrix the hero, Neo, takes the red pill to affirm his hidden suspicions and finally accept reality as it is. He was true to himself, but he was likely halfway there already.
So it is with the announcement this weekend by a veteran Toronto newspaper writer and editor who came out of the closet, as he put it, and declared himself a libertarian. Like Neo he was finally true to himself as well, it was just a matter of announcing it.
Of course this still takes courage, maybe less so when you are established in your career, but never underestimate how such a declaration seems to make horns sprout from your head in the view of some people.
Over the years, the generally held view of members of my party has been to seek out those people who are already leaning toward libertarianism, and help them screw their courage to the sticking post, to use a Shakespearean metaphor (this time from Macbeth). Literally, to help them take the Red Pill by offering it to them. I think this is a good time to come out, the lines are being drawn and closets tend to be stuffy.