Hey there fellow students, My name name is Zachary Dunivin and I am gonna be TA in this course along with Simon and David. I am a fifth year PhD student at Indiana University. I am in the complex systems program and i am also in the sociology PhD program. I am doing both. i have now a social science background for about 4 years but prior to that my background was mostly in molecular and evolutionary biology and also analytic philosophy and I don't do much with biology anymore. But i feel like, even though i am not a huge fan of analytic philosophy or the work that done in the field. It really has served as a way for me to think much more seriously and rigorously about what is motivating my work and the particular moves i make as i construct an agreement largely with numbers. My work is fairly diverse. I am not gonna talk about all of it sure some will come out. My dissertation is on bureaucracy as an information processing system looking at how bureaucracy label themselves and there environments to make them tractable to control. There is some math. There is some empirics and there is also some kind of good old fashioned verbal agreement in there. So as far as this course goes, I don't know much how much you are going to notice me. I will be posting modules as they become available and i am gonna be reviewing all the course materials before you guys see them i will probably end up adding to the course material somewhat and then i will be available to field questions, technical questions. I will receive them and pass them onto the complexity explorer technical team and and for more substantial questions, I will be post them on the discord so that the answers are publicly available and others of you can chime in when you see questions that you find interesting or feel like you have something to bear on them I think we can also ask questions through the complexity explorer forum. That's fine too. But that kind of my role in the course. I am really excited to be here. Been involved with Santa Fe institute of pretty much the whole time i have been in grad school. A lot of cool stuff goes on here and i think it's an exciting time to be doing this course. You know it both because the course itself is new and because a lot of the materials are kind of newer. And, I look forward to doing this with you guys. Thank you.