by hunting or the trading of goods, which could meet some universal need. the point is that many human needs are the same in all cultures. a major difference between cultures lies in the extent to which they are able to meet those needs.
it is not however the case that just because a need exists, that it will be meet. it is also necessary that a means by which the need can be meet be known. if a new idea or invention is to be adopted then usually three conditions must be met. the first is that the knowledge as to how to create the idea or make the invention 