Invasive Scanning
Ever since the Age of Mechs commenced, an uncountable amount of humans sought to become mech designers.
While not all of them succeeded, an enormous amount of individuals successfully entered the mech industry over the centuries.
The vast majority of them never managed to move past the Novice and Apprentice stage. Competition was high and the difficulty of breaking through to Journeyman halted many ambitious mech designers.
As their youthful energies sputtered out after years and decades of marginal progress, they usually transitioned into lesser engineering careers.
Those that managed to pass all of the hurdles and become Journeymen were quite few.
Even less of this group managed to overcome the difficult hurdle that prevented them from realizing their design philosophy.
Of the exalted Masters that succeeded in fulfilling their ambitions, only an exceedingly tiny proportion of them managed to pass through whatever hurdle lay beyond.