Still, Stanton’s efforts to do so leave a lot to be desired. And the caveman, whose name is Thorn (Jorge Vargas), isn’t horny quite yet as far as we can tell. Her name is Claire, and she’s obsessed with the mRNA she scrapes from Thorn’s fossilized skeleton in her lab. Grade: D“In the Blink of an Eye” premiered at the 2026 Sundance Film Festival. Want to stay up to date on IndieWire’s film reviews and critical thoughts?