Let's have another quick workshop before the holiday break. I'd love to cover a few more fundamentals. Let's chat more about particle systems, and using velocity data in other packages such as Unity and Unreal. Also, basic RBD and a peek into the new RBD system in Houdini 18 coming up. I'll show the current system and its new features and the limitations that the new system should address. Also, cloth and hair using the new Vellum system. Lots to cover, and please feel free to add some of your own ideas.