> I don't believe that good developers without prior experience in such systems can become productive in a week. They could be able to write code that compiles,

> I don't believe that good developers without prior experience in such systems can become productive in a week. They could be able to write code that compiles, but the week after that they are going to throw it all out and restart from scratch. So.... pretty much like programming in the most popular languages, too. ;)