[MarkMarine]

- Channels are woefully inefficient. I usually use the stdlib as a good reference for performant code, and I don’t see any use of channels in there.

- If you’re not using channels because they are slow, now you’re letting some nebulous “context” bleed into every function to handle closure and cancellation. This is basically provided implicitly by the nursery concept, but stapled on to every function in go because it was an afterthought, then google started using it, so it’s everywhere.

- The Unscoped nature of go routines does make the program more complex to reason about.