"FoundationDB founder here. Flow sounds crazy. What hubris to think that you need a new programming language for your project? Three years later: Best decision

"FoundationDB founder here. Flow sounds crazy. What hubris to think that you need a new programming language for your project? Three years later: Best decision we ever made." I don't think that should come as a surprise to anyone. In the long run, language-oriented approach seems to be the best approach to handling the intricacies of complex software systems. The only thing stopping it seems to be a certain lack of skills and experience on part of most developers, and the inadequacy of current language-building tools. (By any chance, are you familiar with the "let's simplify language construction"-related work of people at vpri.org?)