What I love about architecture and industrial design is the inherent constraint of usability that exists in those fields. You can make a pretty house but it has to be livable. You can make a beautiful fork but someone still needs to be able to eat with it.
Tara Mann, a product designer who has worked for Basecamp, Twitter, and Science, Inc. quoted in: Tara Mann walks the line between weird and sensible.
Picture by Stuart Williams, licensed under Creative Commons.