Cinematic explanation of a 4-bit ALU

I made Jev do a stupider thing, be a NAND gate, so it can run a 4-bit ALU. Adding 7 + 5 = 12 takes 116 gates, 7.6 seconds, $0.0018, and a compound 84% probability. Billions of these will play Doom one day. I've asked Opus 5.5 to make a video about it, Nolan style.