i have a few moments and some idle thoughts.
in the past two years i've changed how i approach guitars and action a lot (i've changed my thoughts and actions on a lot of things and thats a good thing

, must be getting older).
i am a mechanical type person, have(or rather had, i'm sure its not in spec now)a BMW motorcycle mechanic certification many moons ago, was taught auto and general mechanics by my father(a wonderful man) and built and flew RC airplanes up until about 8 years ago. I'm used to measuring small distances and making things fit in as perfect a way as possible. I still carry over a lot of things i've been taught-i use a torque wrench on almost everything-and get a tad beside myself if a product does not specify the torque setting when putting something together.
Guitars-i used to measure each and every thing to the nth degree and would setup my guitars based on numbers. It was good. Then i read and digested articles and ideas from Charles Tauber. His method used numbers, but in the end it used "feel". It took me a while to come to this type of work with an instrument. And its all around better for me. Our instruments being largely of organic materials, change daily in nth degrees. The way i was setting guitars up, i would achieve my ideal, but oft times the instrument played better if i varied off the chosen number.
I now set up a guitar based on how it works best for me-each one is an individual and i don't compare and attempt to do the exact setup on each one. it doesn't bother me if the action is higher by measure than what i'm used to, if that guitar plays easy and plays right-thats where it belongs, and it will work best at that spec.
i think sometimes a person might read a post like this, especially if they are new to all this, and after measuring around on their guitar(that played fine for them until they read it), decide they should lower/change things. Maybe it will work, maybe it will not. a setup works along side the technique of the person playing the instrument-thats why one must know "how" they play when they are setting their instrument up and simply not follow someones numbers(which oft times will lead to a worse feeling instrument than before). a good tech will usually want to see you play before they do work on your guitar-its for them to see how you attack using your right hand, and how deft you fret with the left-other things being how much projection you want to get out of the instrument and do you control the strings with muting or not, do you palm or finger mute. it all mattters-not just the numbers.
my own stuff is low, real low. but its how i play. a lot of folks would have buzz and rattles going on with my instruments-especially if they strummed medium to hard and/or used a pick aggressively without muting.
so definitely read up on this stuff, learn to work with your guitar, do your own maintenance, you will make a few mistakes but its all reversible if you stay in the circle. check out places like frets.com, bryankimsey.com,charlestauber.com. a good book is worth a fortune-i like Dan's book a lot(
http://www.amazon.com/Guitar-Player-Repair-Guide-3rd/dp/0879309210/ref=sr_1_1?s=books&ie=UTF8&qid=1326518310&sr=1-1), it reads easy, he has good explanations with pictures/drawings.
so don't be scared of your guitar, get to know it. change one thing at a time and see how it effects it. on a day you have time, mark the nut on the end of your truss rod with a black tip marker-change it back and forth and see how that effects the whole guitar. cut some strips of paper and make shims to put under your saddle to see how raising effects it-where and how(the strings, the projection, the tone). maybe buy a drop in taylor saddle and shave it lower than the one you have-see how that effects things. in time you will be very comfortable and will be able to set that guitar up to play its best for you-and when weather effects it, you'll know instantly what/how to make changes to keep it and you playing your best.
a few specific tools makes this fun and easy-in a later post i'll make a list of my guitar tool box. its not that expensive. in no time you will be changing and making a new nut if you need to, a new saddle from a bone blank will be a 30 minute job-and will be done right, and thats only using a hobby saw, some fine grit sandpaper, and a $11 mill file from Lowes(and the blank).
and these thoughts have nothing to do with the OP, i love numbers and posts like these, i love measuring tools and setting things up to a set standard-its been hard for me to "let go" and accept guitars are in ways living objects, they are not machines. all of what i mentioned above is a short story of my past and my learning experiences. I am capable of disassembly and repair of a complete motorcycle or engine and enjoy that-the first little bit of owning a guitar i was actually taken back with its simplicity and my total lack of knowledge of the thing. there was fear there of not knowing.
your guitar is your buddy, learn all about one of your best friends.
just some thoughts
have a God filled weekend and be safe
d