Why a control test is no longer regarded as a conclusive test? Which test is mostly applied in modern days to determine liability?

[Law of Torts] – The control test as traditionally formulated was based upon the social conditions of an earlier age and “was well suited to govern relationships like those between a farmer and an agricultural labourer, a craftsman and a journeyman, a householder and a domestic servant and even a factory owner and a unskilled hand but the control test breaks down when applied to skilled and particularly professional work, and, therefore, in recent years it has not been treated as a exclusive test.