Why Async/Await Fails Concurrency and the Tokio Rayon Trap

The Tokio/Rayon Trap and Why Async/Await Fails Concurrency

I argue that async/await makes concurrency easy to write but complex to operate by hiding structural chaos. By confusing asynchrony with concurrency, it forces developers to manually manage runtimes like Tokio and Rayon, turning them into human schedulers. I propose Project Tina, a deterministic framework that replaces runtime magic with strict architectural guarantees to ensure predictability over brevity.

"Predictability beats brevity."