?????? ?? ?? ????? ?????? ??????? ??? ???? ?? ????? ??? ??????? ???? ?????????? ?????? ????? ??????? ???????? ??? ??? ??? ??????????? ??? ?????? ??? ???????????? ?? ???? ?????? ?????? ??????? ??? ??????.Having said that, it pays to understand what the various applications and expert services we use—and the businesses that make them—are accompli