Public discourse is a strange thing. It clanks, whirrs and blows steam. As it hacks and grinds away, making an assembly line of ideas to choose from.
Discourse operates this way on any topic worth our time. Take for example the discipline of engineering.
Engineering does things to the air and water, some for better and some for worse. Practices have changed in recent decades. At the same time, the old principles apply even more in new situations.