Ha, I felt that one in my soul. I used to hand write every single offset like it was some kind of badge of honor, and half the time I'd fat finger a number and scrap a part anyway. Then a guy showed me his sub program and I sat there feeling like a genius who just found out he's been tying his shoes wrong for 20 years. Now I let the subs handle the tool wear and I just check them, way less stress and way fewer surprise crashes. Still write the odd offset by hand when the job's a one off, but I'm not gonna pretend it makes me tough.

My gate post was basically a predator doorway and I didn't even know it. Measured mine after reading this and found a 1.5 inch gap at the bottom corner where the ground had settled, plus another spot near the latch I never would have caught just by looking. My wife asked why I was crawling around the run with a ruler like a weirdo, but hey, it beats losing another hen to something I could've fixed in ten minutes with a shovel and some dirt.