What was needed for successful battering between senttement

Which of the following is not a required characteristic of a well-written melody? variation in pitch shape lyrics phrase

Take a look at this dictionary entry. contest con • test (n.) kon-test [from anglo-french or latin] 1. a competition between rivals for a prize 2. a struggle for victory 3. a dispute; controversy (v.) kuhn-test 4. to fight for in a battle 5. to call into question

Why does yu tsun kill dr. albert at the end of borges’s “the garden of forking paths”?