????? ???????? ???????? ??????? ?????? ?????????? ??????? ??????? ?????? ???????. ???? ??? ???? ?? ????? ????? ?????? ??? ?? ????? ?????? ???? ???? ????? ???? ?? ?????? ?? ??? ??????? ?? ??? ???? ?????? ????? ????? ?????? ??????? ?????? ?????? ?? ?????? ????? ????????? ??? ???? ?? ????? ???? ?????? ???? ???? ?????. From diagnosing complex issues