Cargo cults are religious practices that have appeared in many traditional tribal societies in the wake of interaction with technologically advanced cultures. They focus on obtaining the material wealth (the "cargo") of the advanced culture by imitating the actions they believe cause the appearance of cargo: by building landing strips, mock aircraft, mock radios, and the like.[2] Similarly, although cargo cult sciences employ the trappings of the scientific method, like an airplane with no motor they fail to deliver anything of value.[3]