The point I was trying to make is that the idea that a JIT or compiled version will come along in a few years drives people to use slow languages for high perfo

The point I was trying to make is that the idea that a JIT or compiled version will come along in a few years drives people to use slow languages for high performance projects in the first place. This creates a cycle where the language is used in a way that a JIT coming along is a self-fulfilling prophesy. The irony is that the companies investing the most money into eventual JIT/compilation are the same ones that wrote code believing it would "come around" one day. The only way to stop the madness is to avoid using these languages for high performance code in the first place. Having used many fast/slow languages over the years I'll say I don't really notice any increase in productivity one way or another, and no difference in the richness of the library ecosystem. Are there any studies that show more dynamic languages are more productive? Usually the argument is made that the more abstracted the language is from hardware the better it is to work in, but I don't notice a productivity difference in C#/Java vs Python/perl