As explained in "Dune", the Butlerian Jihad is a conflict taking place over 11,000 years in the future (and over 10,000 years before the events of "Dune") which results in the total destruction of virtually all forms of "computers, thinking machines, and conscious robots". With the prohibition "Thou shalt not make a machine in the likeness of a human mind," the creation of even the simplest thinking machines is outlawed and made taboo, which has a profound influence on the socio-political and technological development of humanity in the "Dune" series. Herbert refers to the Jihad several times in the novels, but does not give much detail on how he imagined the causes and nature of the conflict. Critical analysis has often associated the term with Samuel Butler and his 1863 essay "Darwin among the Machines", which advocated the destruction of all advanced machines.