Mainly, am I going to spend hours fussing with the basics of the language. For example in R, it’s too slow, so I had to write Rcpp, only to discover there’s no real way to debug it from RStudio, down into the rabbit hole, lldb, Rinside, everything that can crash does, terse errors messages with out line numbers, opaque SEXP types XCode can’t decode etc. So basically are the normal everyday use cases fraught with quirks you need to know more about the internals of Julia or can you just be a user? If that makes sense.