TheCodeBreakers
This division of labor is as much a
sign of maturity in cryptology as it is in a society.
Still another sign of that maturity was the emotional apprehension of
the role played by the blunders of inexperienced, indolent, and ignorant
cryptographic clerks. Cryptologists had had an intellectual awareness of
this danger at least since 1605, when Francis Bacon wrote that "in
regards of the rawness and unskillfulnesse of the handes, through which
they passe, the greatest Matters, are many times carryed in the weakest
Cyphars." But it was not until cipher key after cipher key, and code after
code, had been betrayed by needless mistakes or stupidities or outright
rule violations that the magnitude of the problem was borne in upon
them. The problem had swollen to such proportions because so large a
volume of messages had to be handled by so many untrained men—
against whom were pitted the best brains of the enemy. The experts
annaabi.ee 
