I had written two implementations of the same program in both Ruby in Crystal that need parallel (not threads!) jobs to be run. It did some more or less heavy computation on large data sets. Almost no difference in terms time execution. Crystal is nice, but if Ruby is the same, what's the point? Only thing I don't like about Ruby now is how they implemented types (in separate files... no, thank you).

But generally speaking, after 14 years of Ruby... and also trying many more languages - I do know what I want. It's not speed. It's not memory safety. It's not paradigms. It's not static or dynamic typing. It's not the packages and the community. Nope.

I want easy code navigation. I only currently know of one language, that hasn't even been fully released yet, that achieves this task to a degree. But even then, it's only 30% there.