Summary
This quote suggests that progress and development throughout history often come at the expense of our natural resources and environment. The use of the metaphor "tin cans" highlights the disposable and wasteful nature of human actions in the pursuit of advancement. It implies that the progress of civilization leaves a trail of waste and ecological damage in its wake, with little regard for the long-term consequences. Ultimately, it serves as a cautionary reminder to consider the environmental impact of our actions and strive for a more sustainable future.