Looks interesting. I wonder if the author has the courage to doubt (of course understand as well) his current atheistic metaphysical assumptions and beliefs whatever they are. In the spirit of healthy skepticism of course.
Luckily atheism is the absence of belief - hehe. Metaphysical? Get real bro 
For example, you believe you have a mind and that you believe you are the author of your own book. Ever had the courage to doubt that? And why should you quite frankly. Then again, why should those who believe that their reality exists because of reason have the courage to doubt that belief.
uhm. wow. ok.
this is now getting a bit too local-office-conspiracy-theorist for me.
as much as i have had these moments of contemplation, and thought, that i might just be the figment of someone else's imagination... or part of a dream... or part of the matrix for that matter...
what point is pondering that in any case. there is diddly one can do about it. you cant exactly pinch some oke, and say, hey wake up dickhead, and end your own existance.
even if one's life is an illusion, what exactly do you plan to do about it?
if you wake up one day, and scheme, ok, im not real. then what? you off yourself cause you dont want to be unreal.
er, way too gangsta for me thanx.
im no intellectual with big words and hectic explanations not nobody else understands shit about.
but if i am not real. then fukkit, i want to reload, coz this life sucks.
i am me, how i came about, is a mystery, no point in contemplating it till infinity.
if i turn out not to be real.. then shit, so be it.
its a bit nutty and not a little freak-showish to ask something like are you the author of your own book?

eh, wtf?

like, who else wrote it, bob the builder?
god, maybe?
no guy, seriously, that is just a silly argument, and i think, latching unto contemplative shit like meditation and enlightenment and one's own reality, which i think, is personal matter, and not really discuss-worthy on a forum like this.
if you doubt your own reality, then that's super and shit. but dont come and hack steve cause he's got the titanium bollocks to actually put himself out there and publish a book. i take my hat off to him any day.