Final answer:
Lame Deer uses an analogy comparing found money to earned money to describe our often careless economic behavior with easily acquired wealth, which encourages a broader reflection on sustainable living and resource management.
Step-by-step explanation:
The analogy used by Lame Deer to describe our way of life with money highlights the different ways we perceive and utilize money based on how we acquire it. For instance, when comparing found money to money that's earned, there's often a tendency to treat the former as 'mad money' and spend it with less thought or care. This indicates the 'easy come-easy go' mentality that affects our economic behavior based on the context in which the money is obtained. Lame Deer's observations encourage a reflection on sustainability and the need to manage Earth's resources wisely, emphasizing the importance of living on renewable flows rather than depleting one-time resources.