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During the 1890s and early 1900s , Barter Island was a key trading point , and residents of the region came to rely on the ability to obtain trade goods there . It was a turning point , and people now recognize that IT is important in how the government provides services . When Parks began a minute examination of the images , made by breaking the clusters of spots down into tiny picture point , or pixels , he found statistical evidence that he was seeing not real events , but what he calls an " instrument artifact . Then , at a later point , and dispensationalists argue frequently over the exact details , Christ would come a second time to establish God 's reign on earth for a thousand years . The tractor was the starting point , but researchers are going beyond that and looking at some robotic tractors , which are still in exploratory stage . Because , you know , it 's a good talking point , and people get excited .