Why Google introduced 'Showing Results for' [video]

A few days ago there was a discussion about this feature, and how DDG does it better.

http://news.ycombinator.com/item?id=2911175

By coincidence I came across this 'propaganda video' from Google today, where they explain why they made this decision. I thought it might be interesting. Since the story is already 4 days old and noone was going to read it if I post it as a reply, I posted it as a new story.