PURPLE Japan's Cipher- William Friedman and the "WWII diplomatic code" - Pearl Harbor 12 7 1941

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