‘Wallace & Gromit,’ ‘Memoir of a Snail’ Helmers Spill the Secrets Behind Their Stop-Motion Oscar Contenders

Stop-motion films are by their nature some of the most delicate, analog creations that exist in a sharp-edged entertainment universe grappling with the impending impact of AI. This year two of these movies — “Memoir of a Snail” and “Wallace & Gromit: Vengeanc…