You may have a particular measure of success in mind, but it seems to me that Julia has already succeeded: it is a new language for scientific computing that me

You may have a particular measure of success in mind, but it seems to me that Julia has already succeeded: it is a new language for scientific computing that met its goals of providing high level abstractions and an expressive syntax while not compromising on performance. Its public release was in 2012 and it’s already one of only four languages used in high-performance scientific computing. Of course, in many areas its ecosystem is immature; but in others, such as differential equation solving, it’s a leader.