Tim Brown urges designers to think big

"Tim Brown says the design profession has a bigger role to play than just creating nifty, fashionable little objects. He calls for a shift to local, collaborative, participatory "design thinking" — starting with the example of 19th-century design thinker Isambard Kingdom Brunel."

At http://www.ted.com/talks/tim_brown_urges_designers_to_think_big.