Designing the next programming language? Understand how people learn!

Somehow it is a recurring theme in computer science: create a “programming” system that is easier to use and learn than the existing programming approaches. I am not just talking about better tools, like IDEs, but also new languages. It seems as if each self-respecting programmer creates his/her own language or tool-set nowadays, right? Okay, I have to admit that not all efforts are focused on making things easier, often.