[healsjnr1]

In my own anecdotal experience, I think it comes down to what the product you are working on needs, and how your team works.

Recently, I spent 3 years on Scala then switched jobs and spent 3 years in Ruby.

It was a shock to go back to dynamic languages, but after 3 months, I honestly couldn't tell which felt more productive or led to more stable high quality product.

In Ruby, we had all the issues people point out about dynamic languages, but the product didn't lean heavily on complex data structures or algorithms. We embraced complexity and failure and get good processes, designs and practices to deal with this.

In Scala, we had more rigour, but I also know I spent a lot of time on type design. Once things were sorted there was a lot of confidence in it, but generally, it took a lot longer to get there.

For certain systems that is absolutely worth it, for others (and in my case) it did feel like the evolution of the product meant this effort never really paid off.