I think the way design was practiced for most of the 20th century was very declarative. A designer came up with a solution for a project and put it in place and shipped the solution and it landed in a reader or a customer's hands as a brochure. They would see it as a poster, or as a piece of signage. And that was sort of it. That was the end of it. I think Internet technology has really upended that whole equation because in some ways a designer's work is never really done online.
