Скачать или смотреть How One American Codebreaker Cracked Japan's Purple Cipher 18 Months Before Pearl Harbor

In 1940, mathematician William Friedman achieved the impossible: he cracked Japan's "unbreakable" Purple cipher without ever seeing the encryption machine. For 18 months before Pearl Harbor, American leaders could read Tokyo's secret diplomatic messages. They knew war was coming. They saw the warnings. But 2,403 Americans still died on December 7, 1941.

This is the untold story of the man who gave America the ability to see the future—and discovered that knowledge alone isn't enough to change it.

🔍 WHAT YOU'LL DISCOVER:
• How Friedman reverse-engineered Japan's Purple cipher using only intercepted messages
• The tragic gap between intelligence warnings and military action before Pearl Harbor
• Why breaking the diplomatic code wasn't enough to prevent the attack
• The psychological toll of seeing disaster coming but being powerless to stop it
• How Purple intelligence helped win crucial battles like Midway
• The declassified secrets that revealed the full tragedy decades later

This documentary explores one of WWII's greatest cryptographic achievements and its heartbreaking limitations—a story of brilliant success that felt like devastating failure.

📚 TIMESTAMPS:
0:00 - Introduction: The Man Who Broke Purple
2:15 - What Made Japan's Purple Cipher "Unbreakable"
7:30 - Friedman's Impossible Mission Begins
12:45 - The Breakthrough: Building Purple Blind
18:20 - MAGIC Intelligence: Reading Japan's Secrets
23:10 - November 1941: War Warnings Pile Up
28:35 - December 7, 1941: When Knowledge Wasn't Enough
33:15 - The Psychological Breakdown
37:50 - Purple's Role in Winning the War
42:30 - Declassified Revelations: The Full Truth
46:15 - Friedman's Legacy and Modern Lessons