Inside 'The Next Rembrandt': How JWT Got a Computer to Paint Like the Old Master

The project leaders explain their brilliant, troubling masterpiece

CANNES, France—Rembrandt van Rijn finished his last painting in 1669, the year he died. So it was enthralling, and a little unsettling, to step on to a boat at the Cannes Lions festival for a private viewing of the first new Rembrandt in 347 years.