I can't fault him for his enthusiasm, but he also didn't cite anything that you can actually cite as fact, only indicators. JS might replace Rails for line of

I can't fault him for his enthusiasm, but he also didn't cite anything that you can actually cite as fact, only indicators. JS might replace Rails for line of business applications, but I don't yet see JS becoming the dominant language. I have yet to see anyone show numbers related to project expenditures or mission critical deployments, by companies that are not already pure JS.