Consider replacing the first use of "JFK" in the material on counterfactuals with "President John F. Kennedy"; it's better style to spell out the first occurrence of an initialism, and readers less familiar with American political history may appreciate the extra clarity.
Consider replacing the first use of "JFK" in the material on counterfactuals with "President John F. Kennedy"; it's better style to spell out the first occurrence of an initialism, and readers less familiar with American political history may appreciate the extra clarity.