In the case of manual fabrication of crop patterns in the field is a highly accurate (accuracy bricklayer or higher), complex and sophisticated activity, which in the case of very complex shapes, numbering several hundred parts required, including preparation and at least basic training sequence and sequentiality of individual actions up to several thousands man-hours that could be expressed as, say, 20 times a few thousand man-euros or man-dollars. (less than 20 U.S. dollars / euros per hour would be, often in rain and mud, slippery clay, in the gum boots with a lighted headlamp or flashlight in hand through a field at night, could move only a complete idiot)
Katika kesi ya upotoshaji mwongozo wa mwelekeo wa mazao katika shamba ni sahihi sana (Usahihi bricklayer au zaidi), magumu na ya kisasa shughuli, ambayo katika kesi ya maumbo ngumu sana, na hesabu sehemu kadhaa mia anahitajika, Ikiwa ni pamoja na angalau maandalizi na mafunzo ya msingi sequentiality na mlolongo wa vitendo mtu binafsi hadi Maelfu kadhaa mtu-masaa Hiyo Could kuwa walionyesha kama, kusema, mara 20 elfu chache mtu-mtu-euro au dola. (Chini ya $ 20 / euro kwa saa Je Kuwa Mara nyingi katika mvua na tope, udongo kuteleza, katika buti fizi na headlamp uliowashwa au tochi katika mkono kupitia shamba wakati wa usiku, inaweza hoja tu idiot kamili)