Five problems with Google Android
unqualified-reservations.blogspot.com
unqualified-reservations.blogspot.com
1) "Android apps are written in Java" I haven't delved into the deeper end of things, but I suspect that it will be a matter of time before people start putting other compilers on there. I mean, Jython and JRuby are implementations of Python and Ruby for use on a JVM. So given that the phone is as open as it claims to be, it should eventually happen. I know the Haxe people are talking about porting Haxe onto android. I'm going to guess it's just a starting point to use Java.
As for the middle layers being closed, I don't see it mentioned explicitly in the design overview, and a browser is in the app layer, not the framework layer so you can replace that for sure.
2) "the installable application is dead" To think that a mobile platform is simply a smaller web that you can take with you is a bit misguided, I think. As an example, currently, no web browser provides GPS data from the user. There's a plugin for firefox, but that's about it. So (as an example) until mobile browsers provide geo-location, you'll be limiting yourself to writing applications that confer the advantages of the web, but not of the advantages of a mobile device.
Native applications will still have their place. Just as TV didn't replace the radio completely, web apps won't completely replace native apps.
His other points seem to be better justified, but at this point, no one knows. Only time will tell.
Android can run any language that can compile to the JVM. On the other hand, compiling to Java bytecode really isn't much different from a source-to-source translation to Java text - at least not from the programmer's point of view. And have you ever programmed in an S2S environment? Sucko.
As for (2), you are absolutely right. The basic problem is that if the Web had been designed as an application platform from the start, the installable application would be dead.
But is the way to fix this to build a new installable application environment? Or a new network application environment?
But Android phones may allow native apps; we really don't know at this point.
It's case #2 of google, using it's power as "the honest, open company" to gang up on the big guy (facebook - openSocial; blackberry, iPhone - Android). But, truly, as it turns out, is not that innovative; which , unfortunately (because some of their things are still pretty good cough reader*), I've come to only accept innovative things from them.