Given Daniel Radcliffe’s age at nine, he had no true context of Maggie Smith’s legacy as an actress nor should he have been. To him, it was just an acting job with a well-known actress. But luckily, Radcliffe left enough of an impression on Smith for her to recommend him for the iconic role. Imagine if he hadn’t worked with her before Harry Potter. Who would’ve done the role justice? So kudos to Smith for seeing Radcliffe’s star power. As the actor mentioned, Smith’s Hollywood heyday was well before he was born, so he didn’t understand the history attached to her name.