What, if anything, does it do better or more effectively than sound film?

There are 4 movies to choose from, Lumiere’s First Picture Show (1895) by Lumiere, A Trip to the Moon (1902) by Melies, The Immigrant (1917) by Charlie Chaplin, and The Cabinet of Dr. Caligari (1920) by Robert Weine. You don’t have to watch all of the movies, just 2 will be fine and answer this question, Given the films you’ve seen this, what are the strengths of silent film as a medium? What, if anything, does it do better or more effectively than sound film?