Design is different from the art.
When you draw a painting, you can draw whatever you want. Yes, because it’s art.
But you cannot do that on design. Different design services different audience. Your designs have to base on the brief.
For example, if the brief is asking you to design a chair. You can design many different styles of the chairs. But it must be a chair, not the table, not the bed. Because design is a kind of service…
Design as Art (Penguin Modern)