CAD verses Sketching, Why Ask?
by James Self
The article goes into reasoning to show the cons of early work in CAD programs. They lack the openness of conceptual development that sketching provides.
The first paragraph:
"A continuing issue in industrial design education is when to allow students to move from sketch work to 3D CAD modelling during studio practice—or whether to let them use CAD at all! I've heard of first year undergraduate modules where students are 'banned' from the use of CAD in an attempt to encourage sketchbook work and more explorative conceptual design practice. In my view this approach is somewhat draconian and does little to deal with the underlying reasons that attract less experienced designers to the comparative certainty of 3D CAD."