So, what happens? We lose something that removes fear, fuels curiosity and powers the imagination and creativity of every child. We lose our naïveté and its effect on what we think and do. Bill Atkinson, one of Apple's super designers and programmers, gained this insight on his successful quest to meet Steve Jobs’ seemingly unrealistic expectations for the Apple Lisa computer. "I got a feeling for the empowering aspect of naïveté. Because I didn't know it couldn't be done, I was enabled to do it."
When you find yourself thinking something can't be done, try a little naïveté. Set aside your experience and what you think you know. Sometimes knowledge and experience can be dangerous to your creativity.
By the way, the Steve Jobs biography by Walter Isaacson is full of inspiration and wisdom for creatives.