When applied to social science, spontaneous invention is when two or more societies develop similar infrastructures and social mores without directly influencing one another. Can this happen (and how does this happen) without direct exchange and interaction? Cultural selection theory, an extension of memetics (the study of information and culture based on an analogy with Charles Darwin’s theory of evolution) says yes; basically, because we are all human. As we all face the same challenges, we all develop similar tools in order to guarantee survival.