The flip side of the coin was that even good programmers and language designers tended to do terrible extensions when they were in the heat of programming, because design is something that is best done slowly and carefully.
Flow systems have two basic features (properties). There is the current that is flowing (for example, fluid, heat, mass, or information) and the design through which it flows.
The constructive intellect [genius] produces thoughts, sentences, poems, plans, designs, systems. It is the generation of the mind, the marriage of thought with nature.