After driving for miles on a dusty road, you park your car near the bank of a river and take a hike through the woods. Soon you become lost. In one direction you see a small stream, and in the other, a trail.

For each of the following situations, invent at least three hypotheses aimed at explaining what went wrong or at solving the problem. Then, for each hypothesis, describe one or more experiments or inquiries that would confirm or disconfirm the hypothesis.