And yet, everyone will agree: void dothing1(Args..){...} //old version of dothing1 the programmer keeps around to copy code from later // which should never b

And yet, everyone will agree: void dothing1(Args..){...} //old version of dothing1 the programmer keeps around to copy code from later // which should never be used void dothing1_backup(Args..){...} is not clean. People often strive for explicit and complete inclusive definitions for concepts better defined by what they are not. The former is more powerful when it applies, but the latter case is much more common.