I've been around guitars my entire life. Once I learned how to play I fed my incessant urge to build and take things apart by...building and taking them apart. Once I got some proper training (Roberto-Venn School of Luthiery, Class of '96) and worked for a few manufacturers I dug deep into the minuitae of design, setup, and repair. But here's the thing... Flip through a Stew-Mac catalog and you'll find jigs, tools, and measuring devices for every single conceivable part of a guitar...which is fine. Reference points are necessary. But I'm not sure what's gained by meticulously measuring and quantifying everything. At first I spent a lot of time obsessing over things like neck relief, pickup height, fretboard radius, nut width, etc. I'm not saying these things don't matter...I just think it's easy to get too caught up in them. Over time I learned a lot of specifics about what makes a guitar feel comfortable and sound good, but when I set up a guitar I don't really measure anything...Neck relief, nut height, string action...I eyeball all of it. Broader aspects like neck radius, neck profile, fret wire size, "perfect" intonation...I just don't really spend any time thinking about those things. I rely on my eyes, hands, and ears to tell me what a guitar needs or doesn't need, and that's pretty much it. It's like the time I spent a weekend in California wine country with a few friends. I did a bit of homework before we left, learned about all the different varietals, what to look for, what subtle flavors might be present...all of it. But ultimately there was only wine that tasted good, and wine that didn't. And no particular one got me more or less drunk than any other. Am I just an uncultured swine?