MC Hammer on "deep search" eninge (Web 2.0 Summit 2011)

He gives a nice presentation, but this has been tried a million times and failed each time because you can't get context from text; it has to be data.

And if it's data, then that's the semantic web. And now the problem has gone from something impossible that millions have tried to something monstrously hard that millions have tried; but still you need something new, some secret sauce, other than that it's you who's working on it. (And that applies to everyone.)