I went to school for about 2 years on a technical course, and I learned a lot. I learned about air mixture ratios and all the stuff; I learned how to draw blood. ↗
Of course, I have given my engineers some headaches over the years, but they go with me. I have always wanted my buildings to be as light as possible, to touch the ground gently, to swoop and soar, and to surprise. ↗
When you're in a club or a theater or even an arena, yeah, you want visuals, you want a good light show. But Slayer has always been about the sound. We have to sound good. It has to be tight. ↗
I found my sound early on. Look at U2: they haven't changed their music for 20 years. Anyway, many people come unstuck when they try to change what they do and what they are known for. ↗