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Even though such cases were rare for those with 'weaker' professions, it was practically a guarantee for those with 'higher ranking' professions.
Most people thought about the 'profession system' as another type of 'innately born talent system' for those who weren't even aware they could advance to higher qualities of body cultivation laws, such as Heavenly, Divine, and Quantum.
It was sort of seen as the 'commonplace' talent gauger of the world of Asterion, and that wasn't merely limited to the world of Asterion, as just about every mortal world used a similar talent system to separate the useless from the 'Heavenly Geniuses'.