"Talking it out" isn't an option when you're dealing with code that's older than last week, let alone code written by developers that you've never met - you can't talk it out retroactively. That's a huge part of the 'which effective subset' argument against C++ and Scala. The argument is that, in the long term, 'simplicity and consistency', even if clunky at times, are way more effective than 'expressiveness'.