Training in ambidexterity is training contrary to a law of child life.
"Civics and Health"
William H. Allen
At any given age of school life bright or advanced pupils tend toward accentuated unidexterity, and dull or backward pupils tend toward ambidexterity....
"Civics and Health"
William H. Allen
The second blemish in this our Authours book, I find in his fifteenth Chapter: where he instructs his Prince to use such an ambidexterity as that he may serve himselfe either of vertue, or vice, according to his advantage, which in true pollicy is neither good in attaining the Principality nor in securing it when it is attaind.
"Machiavelli, Volume I The Art of War; and The Prince"
Niccolò Machiavelli