hone in or home in?
Avoid using the incorrect hone in. Hone is a transitive verb meaning "sharpen" (hone a blade) or, in a figurative sense, "perfect or refine" (I honed my ideas before publishing them). It is the verb home, generally intransitive, whose meanings include "return home accurately," that makes sense with the particle in: He homed in on his opponent's weaknesses.
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