I agree with Gruber's central argument that innovation happens in small incremental steps, and I don't in any way think that 2013 was a waste of time, but you've got to admit that this has been a light year for Apple. Between November 2012's announcement of the iMac and June 2013's WWDC, there were no product announcements (well, OK, they did announce that the iPad would be available in 128Gb, but you get my meaning).

That's a very long time for them to go with nothing to say. Sure, iOS 7 must have been a substantial amount of work, I'm really liking Mavericks, and the new Mac Pro is an interesting piece of hardware - but it does feel like Apple announced less this year than they have in previous years.

So it's got me speculating on reasons why. Did Forstall's exit result in a rocky few months as jobs were reshuffled? Is there some big product that gets announced in 2014 that's been sucking up all the engineering resources? Is Apple under Tim Cook becoming a company that moves a little more slowly and deliberately?

I don't know, but it's fun to think about.