Which word would best describe a person who is dedicated to learning but fixated on trivial details?

The word "pedantic" refers to someone who is overly concerned with minor details and rules, often in an ostentatious or showy way. A person described as pedantic tends to focus on trivial aspects of a subject rather than the broader or more significant ideas. This aligns perfectly with the description of someone who is dedicated to learning but fixated on trivial details, as it suggests a rigidity in thought that prioritizes precision to the point of missing the larger context or purpose of knowledge.

In contrast, the other words present different qualities. "Intuitive" describes someone who understands or knows something instinctively, without the need for conscious reasoning, which does not fit the context of being fixated on details. "Pragmatic" refers to a practical approach that focuses on results and real-world applications rather than theoretical or trivial considerations. Lastly, "voracious" pertains to a great eagerness or enthusiasm, particularly in relation to consuming information or food, but does not imply an obsession with minor details. Thus, "pedantic" is the most accurate descriptor in this context.