Ada generics are easy to understand and were at least publicly known for ~12 years in 1995 (going by the publication date of the first Ada standard, older if we go to drafts and discussions prior to that standard's release). Generics aren't hard to use, and they aren't novel. That there's any debate nearly 40 years after at least one major procedural language introduced them is mind-boggling to me.
People really ought to look into Ada more. The language has a pretty neat type system (ranges are neat!), and it even has proper language constructs to do concurrent programming in it (had it for quite a while!). FWIW, search for "generic" here: https://en.wikibooks.org/wiki/Ada_Style_Guide/Concurrency
