That is bad in one way though, because in the Canon by Avicenna he thought that surgeons should not use knives, but rather cauterization with a hot iron.
Jambo hili ni baya kwa kiasi Fulani kwa sababu kwenye Kanuni za Avicenna alifikiri kuwa wapasuaji wasitumie visu bali wachome wagonjwa kwa chuma chenye moto.