Let's Crack Zodiac #24: Bomb Code Defused?

To learn for free on Brilliant, go to https://brilliant.org/DavidOranchak/ . You’ll also get 20% off an annual premium subscription. A cryptic 1970 Zodiac Killer letter promised a hidden bomb location. Its code, Z32, remains unsolved—but can Dr. Garlick unlock its mysteries? UPDATE: Oops, my math was wrong at 54:34. Z13 actually has this many keys: 26^8 = 208,827,064,576 (almost 209 billion). And Z32 actually has this many keys: 26^29 = 108,199,957,741,720,996,894,562,347,292,921,981,566,976 (208 "duodecillion"). So my comparison was also wrong—it wouldn't take 11 million years to examine all the Z32 keys. In fact, it would take much longer: 16,418,608,236,223,435,000,000 (16 thousand billion billion) years! 🤦🏻‍♂️ Thanks to ‪@ericastone1415‬ for pointing out the error. 00:08 Intro 02:44 Learn math and cryptography! 03:38 Dr. Ryan Garlick: Intro and background 13:31 Dr. Ryan Garlick: Zodiac’s bomb 15:27 Dr. Ryan Garlick: Z13 and new bomb 18:57 Dr. Ryan Garlick: Z32 cipher and bomb map 24:30 Dr. Ryan Garlick: Solutions using unrestricted keys 30:15 Dr. Ryan Garlick: Solutions using Z408’s key 46:00 My response 48:47 Responding to Ryan’s challenge 50:12 Alternative solutions using Ryan’s method 54:08 Conclusions This video was sponsored by Brilliant. = Links: Let’s Crack Zodiac #23: Dr. Garlick’s Solution (to Z13):    • Let's Crack Zodiac #23 - Dr Garlick's solu...   Let's Crack Zodiac #20: Evidence from Elsewhere:    • Let's Crack Zodiac #20 - Evidence from Els...   Radetich reward https://www.ktvu.com/news/family-sfpd... Bill Armstrong On ZODIAC Bomb Letter    • Zodiac Killer - Bill Armstrong On ZODIAC B...   = Music: Underbelly & Ty Mayer - A Hand In The Dark Cheel - Blue Dream Chasms - Dark Matter Anno Domini Beats - Dark Tranquility The Revolutionaries Of Restoration, Tranquil Journeys , Relaxing Guru - Comforting Melodies Chill Vibes = Assets: Cryptographer video by cottonbro studio https://www.pexels.com/video/a-man-do... Stars and galaxies    • Flying Through Every Galaxy In Our Observa...   Comment button    • Video   Button sound https://freesound.org/people/suntempl... Crash https://freesound.org/people/teleport... Wink https://freesound.org/people/bennychi... Sparkle    • Sparkle Glimmer Shine Effect - Green Scree...   Space chimes https://freesound.org/people/gamebala...