We have seen CGI animals on screen, such as the tiger in Life of Pi, but Ang Lee’s Gemini Man features the first ever CGI human that was created for the first time ever with motion capture effect. The technology was used to create a convincing younger version of Will Smith in the film. The Quint caught up with the men behind the magic, Bill Westenhofer and Guy Williams, who told us what went into the making of the 23-year-old Will Smith.