When I was much younger I felt like I had enough skill to make a programming language, but not a good enough idea of what that should be. I thought I should consider the topic for 10 years and decide what would really make a good and distinctive new language.

It has been about 30 years now. I have a much better idea of what I would like, and yet despite all of the experience I have gained along the way, I feel like I lack the skill to implement it.