sorcerer's apprentice

Etymology
, itself a calque of.

Noun

 * 1)  Person who experiments carelessly, without paying attention to the possible consequences of their experiments and without the ability to contain them should they spiral out of control.

Translations

 * Dutch: tovenaarsleerling
 * Finnish: tulella leikkijä, noidan oppipoika
 * French:
 * German: Zauberlehrling
 * Polish: uczeń czarnoksiężnika, uczennica czarnoksiężnika