Division of labour in society
Can each individual engage in ethics to such an extent that they can work out a complete answer to each basic situation in their life by themselves?
For example, if I think electric cars are a solution, then I have to rely on information that I cannot verify myself. According to the United States Geological Survery (USGS), in 2011 there are 33 million proven tonnes of lithium reserves. According to various sources, 46 g lithium are required for a 1 kWh battery. I haven't gone on a world trip to inspect all the lithium mines myself, I haven't been in a laboratory making a battery. I have to rely on the work of others to make the statement "The electric car is the solution for sustainable transportation". This statements requires me to trust other people's statements.
But although I have to refer to a lot of previous work by other people, for after all we live in a work-sharing society, it is still more than a full-time job to be an ethics adviser for mankind.
What would happen if everyone busied themselves in this way? It wouldn't work, as then no one in society would produce anything anymore. A society of philosophers - but what would they live on? A legitimate special status is therfore required to spend so much time investigating these matters. Special statuses have to be verified. What would the world look like today if my advice had been followed since 1991? A whole lot better, so in my case it is a legitimate special status.
In order to live ethically, it is necessary to trust other people's statements as if is not possible to investigate everything oneself. In a society where the statements made by the meida, the government, and leading figures in society are increasingly contradictory, an ever greater part of the population is forced to invest more and more time on the 3rd central concept of ethics: Ethics forces us to verify knowledge.