"NoFlo moves code out of applications and into reusable components that can be visually wired together by doers, not just coders." That sounds cool, but I don'

"NoFlo moves code out of applications and into reusable components that can be visually wired together by doers, not just coders." That sounds cool, but I don't get it. I don't see anything that would allow a "doer" to jump in. A "doer" is not going to know what a string or an array is. Am I missing something here?