Good question. I gave you a rec for that. Google is full of ideas but has little execution. Look at the robots, scholar, idrive (which I used extensively in another Google format to teach seven or six years ago), glass, etc. They come out with futuristic ideas but have little in execution. Their only dominance now is still in search. Yet don't trust that, because someone at AAPL or elsewhere will someday take it to a new level of EXECUTION.