"Why can people blatently ignore the
facts when they're sitting right in front of their face?"
and,
"Then how do you debunk christianity?"
First of all, people will see what they want to see and hear what they want to 
hear.  There's so much information coming through our senses and being 
generated internally by the brain, that it is literally impossible to pay 
attention to more than a small fraction of it.  So we're very selective about 
what we consider important information to process.  What we pay attention to 
is very related to our current goals; we pay attention to what we think will 
help us accomplish our goals, and we tend to ignore everything else.  For 
example, when driving a car, we tend to pay attention mostly to things which 
relate to our driving; other cars, the street signs, stop lights, pedestrians 
crossing the street, things like that.  Other details of our experience are 
generally down-played or ignored.  Not everyone has the goal of understanding 
their world and maximizing their intelligence and creativity; most have goals 
of having other people express approval of them and of getting done with the 
drudgery which they find themselves engaged in.  
	So, if someone doesn't have a compelling interest in making rational sense of 
their world, it is very easy for them to ignore the facts that are sitting 
right in front of their face.  Just like it is easy for me to ignore fashion 
polls and god-knows-what-else is in those glamour magazines.  It's simply 
outside of the area of my interest.  I don't value that information, so I 
ignore it.
	Most Christians don't value truth or rational arguments, so they will simply 
ignore these things, much to the chagrin of those, like us, who do.  
Presenting a Christian with a rational argument, especially one which 
contradicts their beliefs, is almost always futile.  First, they have to value 
rationality and intelligence, otherwise, everything you say is just 
meaningless garbage to them.
	Probably the best way to communicate with Christians is to speak in their 
language, and that means speaking as though you accepted their basic 
metaphysical assumptions.  As ludicrous as you may find their assumptions, you 
will not be able to communicate with them unless it appears to them that you 
have accepted their basic assumptions.  Use their own myths and metaphors, but 
use the ones that most closely resemble your own values.
	They literally speak a different language than you do, and to communicate 
with them, you must translate your ideas into their language.  Yes, much is 
lost in the translation, but you just have to make the best of it.  Ideally, 
you want to get them speaking your language, the language of the rationalists, 
but it's not so easy to teach them, especially when they have no motivation to 
learn it, and if they see it as hostile to their own cherished beliefs.
	Some members of my family are into the particular variety of Christianity 
called Mormonism.  It's often very difficult to communicate my ideas to them, 
but since I was raised in that belief system, I understand it very well, and I 
can do a pretty good job of translating my ideas into their belief systems.  I 
just make a mapping of concepts.  For example, I think about the God concept 
and what it means to them, then I find something reasonably similar in my own 
mind, that has the same type of meaning to me, that fulfulls a similar purpose 
in my own mind, and I do this with all their other concepts, making a very 
coherent mapping of my thinking onto their own.  This way, I can speak and 
sound like a Mormon, but the deeper structure of what I say will reflect my 
own ways of thinking.  It's the deeper structure that conveys my real meaning, 
not the literal interpretation of the symbols I'm using, but the way that I 
link the symbols together.
	Each belief system is literally a different language, a different way of 
linking up concepts.  To really influence someone's thinking, you must have a 
deep understanding of their conceptual map and speak to them as though you 
think very similarly to them, by speaking in their own language.  Then you 
will better understand what changes to make to their conceptual map to lead 
them in the direction you want them to go.
	So, how do you debunk Christianity?  You don't.  You can't.  At least not to 
the believers; they have no interest in processing your arguments, and your 
arguments are literally in a different language than they know; they don't 
even know how to make sense of what you are saying; to them, it's nonsense.  
But you can speak their language to them and help them re-prioritize their 
values, so that they value increasing their intelligence *more* than they do 
now, and you can help them to enjoy THINKING more than they do now.  You can 
discuss their belief system very intently with them, but don't criticize it, 
or they'll just shut down.  Discuss it as though you believe it and examine it 
very closely with them.  Talk about various points of doctrine with them.  
Just get them thinking.  Once they develop good thinking skills they will do 
their own debunking.
	But you must work with them, not against them.  Work from the inside, as a 
friend, not from the outside as an attacker.  Teach them critical thinking 
skills, by example.  Learn to state your reasoning out loud, in terms they can 
understand and agree with.  Don't just state your conclusions, but lead them 
through the process of reasoning, so that you can provide their mind with a 
template that they can use.  The reasoning skills are far more important than 
whether you think the metaphors you are using are really bullshit when 
understood literally.  It's the function that's important, not the variables.  
Once they know how to reason well, they will start questioning their own 
assumptions, and you can help them through the debunking process, but not 
until they're ready, not until they start doing it on their own.
	Unfortanately, it doesn't seem like you've fully recovered from Christianity 
yourself.  You want the Christians to just accept the facts that are sitting 
right in front of their face, and then they will be saved! :-)  This is a very 
Christian attitude, the stressing of instantaneous salvation, that if you 
accept certain beliefs then you are saved, if not you are damned.  Christians 
tend to overlook personal development and focus instead on whether you're in 
the club or out of the club. 	What really matters is personal development, not 
whether you accept certain facts or not.  I think the most important thing is 
that people work on increasing their own intelligence, creativity and 
happiness; their own Extropy, regardless of their religious preference.  If 
their religion is stifling them, then they will move beyond it, if their true 
commitment is to increasing Extropy.  
	The memes we must spread are the ones which influence people to become 
committed to increasing Extropy.  And I think that the best strategy (somewhat 
contrary to what I wrote previously about offending people's minds, but then I 
don't try to be consistent; I'm still learning, after all), is to quietly 
infiltrate various belief systems and insert some well-designed memes that 
will promote increasing Extropy.  We must attach these memes to the religion 
itself somehow, so that it becomes a very important part of the religion, or 
at least of the belief systems of the members of the religion.  Most religions 
I know of already have a lot of Extropian components, so it will mainly be a 
matter of stressing those aspects more and slightly rearranging things so that 
the Extropian Values are seen as very important by the members of the 
religion.  We should bring as little foreign material into the religion as we 
can, but instead work with the religion itself to transform it into something 
more Extropian than it already is.
- David Musick