Sihiri fasaha ce ta hango abin da zai faru a gaba, kuma ya kasance a cikin dukkan al'adu.
Tsoffin Girkawa suna ɗaya daga cikin mutane masu camfin camfi da imani ga duba. Wannan shine ikon da sihiri yake amfani dashi a rayuwar Girgizan tsohuwar, wanda ke jagorantar rayuwar mutum amma har da rayuwar hukuma.
An kira boka mantis da mantiké duba. Malaman duba yawanci firistoci ne ko kuma mata. Kusan koyaushe ana yin sihiri a cikin haikalin inda firist ta hanyar hanyoyi daban-daban ta shiga ƙasa ta musamman kuma ta yi magana da gumakan.
Yin duba na iya zama da ilhama, amma kuma sun san hakan jawo hankali ko kuma duba na wucin gadi, wanda aka gudanar ta hanyar lura da abubuwa daban-daban da ake kira semeia, sun kuma lura da yanayi, yanayi, motsa jiki, al'amuran ilimin lissafi, tashin tsuntsaye da sauransu.
An duba viscera na dabbobi, musamman hanta, ana ba da kulawa ta musamman ga bayyanar lobes, da gallbladder da kuma jijiya.
Hakanan an aiwatar da duba ta hanyar mafarki. A cikin Iliad an riga an ambata mahimmancin da Girkawa suka ba wa sihiri.
Mutumin zamanin Girka kamar na kowane lokaci yana so ya san yanzu da kuma nan gaba. Mutane sun yi tambayoyin da suke son sani, kuma hukumomi kafin fara duk wani aiki kamar zuwa yaƙi ko shiga cikin wani al'amari sun fara tuntubar masu duba. A takaice dai, matsafa nada karfin iko tunda ba'a fara komai ba tare da alloli sun yarda da aikin ba kuma wadanda zasu iya fassara abinda gumakan suke fada sune bokaye.
Lokacin da suke rashin lafiya, an rataya layu waɗanda aka gina a ƙarƙashin tasiri na musamman da ƙungiyar taurari a rataye a wuyansu.