over what we now know is the barnett shale. but one of the amazing things was that fracking had just come into -- i talk about the modern fracking, hydrafracking starts right after world war ii, this is a brand-new technology, taking water, they used toed a napalm to it to slicken it. he actually fracked wells, early, very small fracs, so he would do that, and he starts making good wells, the first ten wells he drills were good, so for 30e years, he is drilling up north of fort worth, every time he drills down a little deeper, he goes through this rock called the barnett shale and his instruments show him, there's gas here, but it's incredibly thick, and from 1982 on, he basically runs an experiment, he would drill a few wells a year into the barnett shale and try fracking them, and failure was okay. that's what he told his people, you're allowed to fail on a small number of wells, and they kept doing it. talk about persistence, for what is that, almost 20 years, they kept drilling and having bad wells. this young guy, he said,