<prompt> Translate the following text to SwahiliCase studies involve what methodologists call thick rich, full information that should come from multiple data sources, particularly from firsthand observations.  <response>: Utafiti wa kesi unahusisha kile wataalamu wa mbinu wanaita maarifa mengi, tajiri, kamili ambayo yanapaswa kuja kutoka vyanzo vingi vya data, haswa kutoka kwa uchunguzi wa kwanza. 