I got to know the Kuleshov effect from the history of western film class. Amazing stuff developed in the early days of cinema by Russian filmmaker Lev Kuleshov, this is an important language in film.
Hitchcock explains the effect in the video above.
If you were to further expand on this language, you can show a shot of an island in wide angle, then cut to a man in a hut. The audience will assume the man is on the island without fail.
I’m applying this effect in my film to tell something that is deep within a character’s mind!