Think of AI like a developing brain (Save this). The Foundation: Classical & ML are the basic reflexes and logic. The Cortex: Deep Learning & Neural Nets allow for complex pattern recognition. The Imagination: Generative AI allows it to dream and create. The Executive Function: Agentic AI (the top layer) gives it the ability to plan, use tools, and take action. We spent decades building the bottom layers so we could finally unlock the top. Real building starts now.