premise: Aleksandr Danilovich Aleksandrov (Russian: Алекса́ндр Дани́лович Алекса́ндров , alternative transliterations: "Alexandr" or "Alexander" (first name), and "Alexandrov" (last name)) (August 4, 1912 – July 27, 1999), was a Soviet/Russian mathematician, physicist, philosopher and mountaineer.
hypothesis: Aleksandr Danilovich Aleksandrov had more than 4 jobs.
reason: 4 jobs are listed. He could have had more, but we do not know. The system has issues with more/less than statements.