black box

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black box

1. (Jargon) descriptive of a method of reasoning or studying a problem, in which the methods and procedures, as such, are not described, explained, or perhaps even understood: conclusions relate solely to the empiric relationships observed;
2. in some contexts, the term can mean a piece of apparatus or an experimental animal in which the pharmacologic or toxicologic pathway has not yet been worked out.

black box

Pathology
adjective Referring to the testing of a histopathology trainee’s diagnostic skills by using unknown glass slides, as in “a black box case”. 

noun A group of 4 to 8 glass slides of tissue that are given periodically to trainees to test their diagnostic skills.
 
Vox populi
An electronic device mounted in all modern aircraft, which records specific aircraft performance parameters and instructions sent to any electronic systems on board.