[idrae]

I agree with you that static typing can create more work on the boundries of a system.

However, the problems you describe also happen in dynamic languages and they have just as much potential to cause problems. The biggest issue with dynamic languages is that you don't get immediate errors when something changes. The system will just keep doing its thing, until it doesn't and you discover that something has changed and has already been propagated to other parts of the system.

I don't think dynamic languages are always better in these cases. They basically let you defer the error/change handling, but with the potential of much bigger data integrity/quality problems when things eventualy do go wrong because of changes in an integration.