Quick Answer: Four critical reasons: Human Understanding Gap (AI lacks emotional/cultural intuition), Trust Building (research identifies trust factors), Contextual Adaptation (avoiding one-size-fits-all), and Ethical Frameworks (human judgment guides AI). Grab's Driver-Partner System achieved 90% satisfaction; Spotify's Discover Weekly serves 40M users—both driven by research.

• AI lacks emotional and cultural intuition that research provides
• Research identifies trust factors before they become problems
• Methodologies: Collaboration Journey Mapping, Hybrid Intelligence Testing, Biometric Research
• Google's Model Cards framework emerged from research practice