> The more interesting claim, which this blog post doesn't address, is that dynamic typing plus unit testing lets you produce working programs faster, That's a

> The more interesting claim, which this blog post doesn't address, is that dynamic typing plus unit testing lets you produce working programs faster, That's an interesting question for any program or app in the move-fast-break-things domain. But perhaps a suboptimal, and potentially inaccurate, one for high-assurance systems that can't break without losing substantial financial value or lives, and/or for which system-wide refactoring may be necessary as the system evolves. Know your domain, choose your tools and methodologies appropriately.