That experience may or may not have been exhaustive or adequately defined; but in any event its mastery by the individual is merely a matter of personal and social economy.

It helps to prevent the individual from identifying his whole personal career with unnecessary mistakes.

It provides him with the most natural and serviceable vehicle for self-expression.

It supplies him with a language which reduces to the lowest possible terms the inevitable chances of misunderstanding.

It is society's nearest approach to an authentic standard in relation to the liberal arts and occupations; and just so far as it is authentic society is justified in imposing it on the individual.
The perfect type of authoritative technical methods are those which prevail among scientific men in respect to scientific work.