Yea, implicits were definitely confusing at first. That and picking a thread pool required a lot of reading. There seemed to be some other outset issues like

Yea, implicits were definitely confusing at first. That and picking a thread pool required a lot of reading. There seemed to be some other outset issues like "avoid this seemingly innocuous operation since it actually has a huge perf hit", but those usually manifest quickly and get eliminated with any sort of application tuning.