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

Over the last decade, async/await won the concurrency wars because it is exceptionally easy . It allows developers to write asynchronous code that looks virtually identical to synchronous code. But beneath that familiar syntax lies massive structural complexity. It hides control flow, obscures hardware realities, and ultimately pushes the burden of scheduling back onto the developer. Rich Hickey articulated this perfectly in his talk Simple Made Easy : "Easy" is what is familiar and close at han