Watching this cube slowly turn itself inside out as its internal gears mesh together is a mesmerising and puzzling experience. It looks like it should never work, but it does. I have a degree in engineering. Hell, I have a PhD in engineering. I (kind of) know how it works. But it still looks like magic to me.
Google's having a bit of a clear out, binning the stuff that failed or was absorbed into the Google+ behemoth. Gone are Wave, Gears, and Knoll, which join Buzz on the scrap heap of unloved Google failures.