Some of the complexity with the webclient comes from the fact that every widget, every controller, every RPC, etc. needs to be somehow synchronized: things should happen just after something, or not before something else. 

In this talk, I will dive into the depth of Odoo's javascript I will explain the synchronization primitives we use and the ways to simplify the life of a javascript developer using asynchronous code. Bonus if we have time, I'll show you a few subtle ways async javascript is wrong and how to fix it.