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I hope they show some np 'unsolvable' problems. they translate nicely into easy to understand story problems and show that we still have alot to learn even about math.
If you have correctly followed commonly agreed upon standards how much of your application is really going to break? and like everyone else has said previous, they are small incremental changes not akin to the old paradigm of huge versions. you could also use a test suite and automate those tests. just some thoughts.
jfruhlinger writes: "Anyone in tech has heard from grousing old-timers who believe the GUI was the beginning of the end of civilization and that EMacs keyboard shortcuts are all the interface anyone should need. But can someone use a modern consumer OS without laying hands on a mouse? Kevin Purdy gave it a week-long try."
The same arguments could be made for or against teaching a child martial arts. In my opinion it is another way to teach children to think critically. But with great power come great responsibility.
So if I publish a book through amazon i get to keep 30% of the profit, but if i make an smart phone app i get to keep 70% of what i sell. seems a little lopsided. I dont think that the tech / operating cost for books publishing is much different than an app store.
I had the same problem with nhl gamecenter. I was more than happy to spend $150 / year to watch games, but since i live in Cleveland, most east coast games are in market. (Pittsburgh, Detroit, NY, Buffalo), resulting in me canceling the service. At least the upside is that the NHL streams the radio broadcasts for free so i can listen. as in all sport the radio announcers are better too.