The 2000s carried Number 4 energy — hard lessons in structural stability, security, and the cost of weak foundations. 9/11 shattered assumptions of safety; the 2008 financial crisis exposed unstable economic structures. Yet 4's builder energy also drove the rebuilding: social media infrastructure, smartphone ecosystems, and new global frameworks.
Four demands solid foundations. The 2000s brutally exposed everywhere that foundations were weak — and slowly built new ones in technology and social organization.
Each calendar year carries a Universal Year number found by adding all the digits together and reducing to a single digit (or master number). For example, 1969 → 1+9+6+9 = 25 → 2+5 = 7. A decade's character emerges from the blend of all ten Universal Years within it, weighted by the events that occur under each vibration.