Very interesting article about the idea that designer should make (hone) their own tools. Some quotes:

It is precisely the task of designers (graphic, industrial or whatever) to discover new possibilities.

Limitations and demands imposed by a client are easier to accept than the arbitrary limitations of your digital tools.

After all, programming graphic programs is much too important to leave to programmers.

Explorers, and that is what they are, do not want to do the same thing twice.