Hi Wei Xiang, thank you for responding. Reading the other comments and your responses clarified things for me in our exchange. You are certainly right about the adiaphorism of the business world; it is amply reflected in the comments you received. Having spent years in the business world, there is a certain necessity for adiaphorism, because many business transactions have a gray area, in which some people's injuries are self-inflicted, but they think the other party screwed them. Hence "caveat emptor." The anti-immigrant streak in America history accounts for some of the blindness to the specific problem you raise; immigrants came to America, the burden on them is to learn the language and customs. I have a moral/ethical issue with that. There is plenty of American literature on this, e.g., "The Jungle" by Upton Sinclair. The other source of it is the myth of the rational informed actor that came out of business education. Maybe a few of your commenters believe this myth. Behavioral economics, which is only a few decades old, debunked this myth, though many still cling to it. At least one Nobel prize came out of work in behavorial economics. "Thinking, Fast and Slow" might be the classic text, imho a fantastic work.