We mentioned a few months ago how convincing the AI de-aging of Tom Hanks looked in Robert Zemeckis’ new movie Here. Now we’ve learned more about how Miramax created the effect.

Visual effects supervisor Kevin Baillie turned to the creative studio Metaphysic, which digitally augmented performances using its own generative artificial intelligence technology and team of digital character artists. And the process even allowed actors to rehearse while watching their young selves perform. The results could replace the Irishman in our pick of the best CGI movie moments.