It is true, a programmer can learn lots of new languages. It is mastering all the libraries and infrastructure which is time consuming. And you guys are all forgetting that writing large portions of your code in c++ is at the moment the most portable solution. It works on IPhone, IPad, Android NDK, PSP, Xbox, PS3, PC, Mac etc. The only thing you need to do is to hookup the platform specific gui code to your app logic.