Re: The DARPA 100 Year Starship
DARPA isn't building anything. If you read the site you'll see that it's just a study in how to develop a path to develop the technologies needed to eventually build a ship.
Doesn't matter, its going to take 100 years of organizing, planning, testing and building to get such a starship going. Our problem on Earth is usually short-sightedness, the fact that there is even money involved now is a good sign to me.
It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring. Carl Sagan