I try for computer uncertainty. I use uncertainty. I define "X E" and "X E" ending things to mean "All as per one might be input maybe or might not be input maybe or might be output maybe or might not be output maybe, maybe or maybe not, maybe.". In ending a sentence, . may be omitted from that definition. Sorry if I was counter-stack exchange principals doing uncertainty. I try to keep it to a minimum on stack exchange. By uncertainty I mean like whatever previous statements, as a whole like true. I am okay as long as it is defined and used. I know Swift, Javascript, Kotlin, and Ruby. Thanks for this site and to you that like help me, X E.