Real time processes are indeed critical in some contexts. And, arguably, we should be putting more effort into some of those contexts. For the APL family, that

Real time processes are indeed critical in some contexts. And, arguably, we should be putting more effort into some of those contexts. For the APL family, that's often a call for code which works with external interfaces. In many potential APL environments a handful of well designed custom primitives would get you where you need to go. But no programming language is adequate for all roles, and that includes APL. (It can still be useful for modeling / prototyping for real time work, but that's not always necessary.)