The adoption of async programming is transforming software development by shifting focus from traditional, line-by-line coding to a process where developers clearly define problems and delegate implementation to AI agents or teammates, allowing for multiple tasks to be handled simultaneously. This approach requires three key elements: clear problem definitions, automated verification, and detailed code reviews. Precise specifications ensure AI or human collaborators can work independently, while automated systems verify results without the need for exhaustive manual testing. Code reviews remain crucial to maintain design integrity and prevent errors, despite the developer not writing every line. This method, used at Braintrust among other places, emphasizes problem explanation and solution review over routine coding, promising a more efficient workflow as more developers adopt this paradigm and as tools continue to evolve.