“Dune” and “Arrival” are childhood dreams come true for Villeneuve and his peers. But, more important than the ambitious attempt to actualize this dream inherent in this undertaking, was the desire to reignite and reimagine the beauty of Herbert and Chiang’s work. These films are gifts that offer pressing guidance on peace during divisive times, the dangers of blind belief and extremism, and above all, the importance of faith, love and hope.