How many different synonyms and equivalent phrases can you list that come close to capturing what Baxter mean by the word dialectic? What do these words in common?

Themes; subfields is the answer

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!