Well, I think it's not really possible to divide a concept from the way it is realized. Many implementations of visual languages were badly done, for sure. This

Well, I think it's not really possible to divide a concept from the way it is realized. Many implementations of visual languages were badly done, for sure. This doesn't mean we can go from "this implementation of a visual language is bad" to "for all implementations of visual languages it is that they are bad". :)