I think he refers to async recently landing in Rust. Here the Rust book mentions it: > async bodies and other futures are lazy: they do nothing until they are

I think he refers to async recently landing in Rust. Here the Rust book mentions it: > async bodies and other futures are lazy: they do nothing until they are run. https://rust-lang.github.io/async-book/03_async_await/01_chapter.html https://rust-lang.github.io/async-book/03_async_await/01_cha... I just read it, and thought it was odd. I don't understand how Rust's async relates to a laziness as in Haskell's laziness.