This will happen when someone writes a new green thread framework and convinces van Rossum to preside over the corporate-sponsored integration into Python.

Four releases later async will be marketed as "this has been a mistake" and the green threads will be the best thing ever. Thousands of blog posts will be written and everyone has to rewrite their code bases. Repeat for goroutines etc.

As Python grows GIL-free threading and machines continue to grow more cores do you think we'll be able to skip green threads and use regular threads instead?