I think it's a good question. There are so many languages around that it is hard to choose from. I think it's beneficial to get good at a handful of languages and use them. However, there might be a time where a newer language is just so great that you have to use it. For example, in web development should you use straight Javascript? Jquery? Dart? Coffee Script?

Personally, Python, Java, and ObjC gets me everything I need and it allows me to get really good at a few languages instead of trying to keep 10 different ones in my head. Granted, if you know a few languages any new one should be fairly easy to pick up.

You don't want to start a job with some new language only to find out that it hasn't evolved enough to give you exactly what you need in your project.

I'd love to hear how people decide what language to use in their business. Do you pick Python over Java because it's simpler to write? Do you use PHP because of how well it's documented?

Like others, I'm saying this based on the title as I can't get the page to load.