"Or maybe you do not need to make a tradeoff between environment and progress at all." Of course you do, or does someone evacuate all the fish from the impact

"Or maybe you do not need to make a tradeoff between environment and progress at all." Of course you do, or does someone evacuate all the fish from the impact zone whenever an empty rocket stage slams into the ocean? This is only a question of the degree of the damage we are willing to tolerate. Of course the precise boundary shifts over time.