Daboolka balaadhinta waa nooc ka mid ah xidheerayaasha loo isticmaalo in si ammaan ah loogu xidho walxaha shubka, dhoobada, ama meelaha kale ee adag. Caadi ahaan waxa ay ka kooban tahay bir gacan bir ah oo dhexda laga geliyo boolal ama fur. Marka boodhka la adkeeyo, gacanku wuu fidaa si uu u qabsado walxaha ku xeeran, isaga oo siinaya bar barroosin adag oo deggan. Boolal-ballaadhineed ayaa inta badan loo adeegsadaa codsiyada dhismaha iyo injineernimada, sida ku-xidhka walxaha qaab-dhismeed sida alwaaxyada birta ah, ama ilaalinta mashiinnada iyo qalabka sagxadaha ama gidaarada.