What can you do with people who are sick with a (mental) virus?  We know what the cure is; rationality... And it is floating around in the cultural zeitgeist.  Everyone who has recieved the innocculation or who is naturally immune to the viral memes can potentially pass on the cure to others whether they have yet to be infected or they already are. 

 I get the feeling though, that even though I would like to think that it's never too late for someone to become a rational thinker, sometimes it just is too late.  The same thing happens with curable diseases that have advanced too far before the cure is administered... Or a forest fire that has spread beyond the control of fire fighters.  For now, we just have to work where we can be most effective.  Like immunizing everyone to smallpox before they get it, or cutting fire breaks in forests so the fire can only spread so far.  We shouldn't waste all our time and resources on trying to cure someone of smallpox who is already in their deathbead when we can immunize everyone else, and we shouldn't throw every firefighter in the nation into the front of an uncontrolable blaze powered by 100 mile an hour winds when we can have them knocking down trees and digging trenches a couple miles downwind.

Taking it a little farther...  I don't think that religion and superstition will ever be eradicated completely even if we did remove every trace of it from the earth, it would still pop up in one form or another.  Just like we can never completely defeat disease, or stop forest fires from happening. 

An ounce of prevention is worth a pound of cure.

I wish I knew who said that.

Well that's my metaphor for the day.