Because Alexander had other ideas than Thomas
This question is a good one. It has a lot to consider. That includes the advantages and disadvantages of the Industrial Revolution. Depending on the person the opinion may differ on which had more. Though society did progress by the Industrial Revolution, and it created the fast, pleasure seeking life we enjoy today. It also affected human life and even more nature. Better said the Industrial Revolution did alter humanity and nature. Whether that is bad or not we are still watching today, as the Industrial Revolution only continues .
One of the major consequences of people migrating from the rural area to the city was that population density rose and living conditions in many cities became very poor.
Mootness seeks to prevent the plaintiff to assert the claim too late when the plaintiff has no longer a personal stake in the outcome because change of circumstances. Ripeness arises when a plaintiff suit is premature because the plaintiff's injury has not yet occurred, it is speculative or may never occur.
It would help the nation focus on pressing problems.