How did the concept of design thinking originate and evolve to its current state?

• 1970s-1980s: Influential writings by Ken Garland's First Things First Manifesto and Victor Papanek's Design for the Real World emphasized the need for design to address real-world problems.
• 1978: IDEO began practicing human-centered design with a focus on empathy, optimism, iteration, and creative confidence. Even before this, works like Don Koberg's The Universal Traveler (1971) and George Nelson's How to See (1977) set the stage for this mode of thought.
• 1992: Richard Buchanan introduced the challenge of applying design to "wicked problems," or complex and ambiguous challenges, shaping the ongoing evolution of design thinking.
• Early 2000s: Design thinking gained recognition as a problem-solving approach, with IDEO adopting the term to describe its principles.
• 21st century: Design thinking expanded into various industries, becoming a widely recognized problem-solving approach requiring ongoing refinement to maintain its integrity.^[1]