Relevant quotes from the slashdot summary (couldn’t easily find the time point for this in the video):
Go and Julia: "I still think that Go is a very interesting language too. Of all the new languages, Go is probably the most Python-ic — or at least the general-purpose new languages. There’s also Julia, which is sort of an interesting sort of take on something Python-like. It has enough details that look very similar to Python that then when you realize, ‘Oh, but all the indexing is one-based and ranges are inclusive instead of exclusive,’ you think, ‘Argh!’ Nobody should ever try to code in Julia and in Python on the same day.
“My understanding is that Julia is sort of much more of a niche language, and if you’re in that niche, it is superior because the compiler optimizes your code for you in a way that Python probably never will. On the other hand, it is much more limited in other areas, and I wouldn’t expect that anybody ever is going to write a web server in Julia and get a lot of mileage out of it. And I’m sure in five minutes that will be on Hacker News with a counterexample.”