 In 1975, with X-ray crystallography of transfer RNA and seeing how that affects the carrying of instructions to other parts of the cell. That was kind of a big moment for you and that was at the cutting edge of knowledge and you've spent the next 40 years at the cutting edge, plus years at the cutting edge of knowledge, always pushing, always pushing the edge of what we know. Tell us about that. It's not just knowledge, it's also engineering, but yeah, the transfer RNA, that was a teenager when I was first introduced to this research project, my son called Kim and his team, and I was doing, I started out, it was just a job, but it was one that I picked. I mean, I didn't, you know, to be the fusion of math, physics, chemistry, biology, computer science, all in one package, because you really had to have all of those, it's not like looking through a microscope where you just see things, you actually have to solve the structure. But it also introduced me to the whole world of nucleic acids and the epiphany of typing in all of the sequences that were known at the time, the one-dimensional structures folding over the three dimensions, and then seeing how, in essence, how easy that was, and how valuable it would be to have the one-dimensional structure of everything in the world. It also introduced me to automation, so we had, all that data was automatically collected this in 1974, and almost nothing was computerized or automated in the rest of biology, and it took, well, time to introduce that. And there were many other aspects of it, you know, first-folded RNA, first-folded nucleic acid, it was, led me to a lot of, almost everything we're still working on has to do with that, and we still work on even transferring it itself in the genetic code, changing genetic codes, a number of organisms now.