In terms of whether the European silver coin is brought to North America by the Norse, the reading passage and the lecturer are contradictory to each other.
The reading passage states that the long distances between the Maine site and the Norse settlements makes it impossible for the Norse to travel that far, while the lecturer views the issue from an opposite angle. According to her, Native Americans who are interested in obtaining objects from far away places are likely to bring the coins to the North America.
Contrary to the belief in the passage that absence of other coins in Norse's habitats proves the hypothesis to be false, the lecturer argues that it doesn't necessarily mean the Norse didn't bring any coins with them considering they may return to Europe with coins.
According to the passage, being aware of the fact that silver coins are useless to the North Americans, the Norse can't bring coins there. However, the lecturer argues that coins are appealing for the native Americans considering how beautiful they are when made into necklaces or jewelries.