Leonardo da Vinci is celebrated as an extraordinary thinker due to his remarkable combination of talents and accomplishments in various fields, spanning art, science, and innovation. His brilliance lies in several key aspects:

1. Multidisciplinary Genius: Leonardo was a true polymath who excelled in numerous domains, including painting, anatomy, engineering, mathematics, and architecture. His ability to bridge the gap between art and science was unprecedented in his time.

2. Artistic Masterpieces: Leonardo's paintings, such as the Mona Lisa and The Last Supper, are iconic works of art that continue to captivate and inspire people worldwide. His unparalleled skill in capturing the human form, use of sfumato (subtle transitions between colors and tones), and attention to detail set him apart as a master of the Renaissance.

3. Scientific Pioneering: Leonardo's notebooks are filled with scientific observations and sketches, revealing his profound curiosity about the natural world. He conducted groundbreaking anatomical studies, dissections of human and animal bodies, and made significant contributions to the understanding of anatomy, biology, and hydraulics.

4. Innovative Engineering: His designs for flying machines, war machines, bridges, and urban planning showcased his engineering ingenuity. Although many of his inventions were never built during his lifetime, they laid the foundation for future technological advancements.

5. Forward-Thinking Inventor: Leonardo's inventions and conceptual designs extended to concepts like the parachute, helicopter, and scuba gear, demonstrating his visionary thinking and the anticipation of future technological needs.

6. Curiosity and Observation: Leonardo's insatiable curiosity led him to scrutinize and document the minutiae of the world around him. His keen powers of observation allowed him to make connections between seemingly unrelated phenomena, pushing the boundaries of knowledge.

7. Pioneering Spirit: He challenged prevailing dogmas and conventions, fostering a spirit of innovation and inquiry that continues to influence scientists and artists to this day.

8. Legacy and Inspiration: Leonardo's work and ideas have left an indelible mark on art, science, and innovation. His notebooks remain a testament to the power of interdisciplinary thinking and continue to inspire generations of thinkers and creators.

In essence, Leonardo da Vinci's extraordinary thinking emanated from his ability to bridge the gap between art and science, his insatiable curiosity, and his profound impact on multiple fields. His legacy serves as a timeless reminder of the boundless potential of the human intellect and the importance of nurturing creativity and interdisciplinary exploration.