I guess I'm just use to hearing "crypto" used as a term that means both the applied part, as well as the math part, so whenever I see someone else say "don't ro

I guess I'm just use to hearing "crypto" used as a term that means both the applied part, as well as the math part, so whenever I see someone else say "don't roll your own crypto", I assume they mean everything from the primitives used all the way to how they used them. Sorry for the confusion