Within the second half of the article it is assessed whether or not the use of copper arose independently with different cultural groups or did it arise in one and was then "borrowed" by others. Jenness goes onto explain that indigenous communities began to use copper first and following this, Inuit adopted it. This reasoning was reached through the understanding that slate was previously used among Inuit and was replaced by copper at a later time than the advent of when indigenous communities began to use it.