question:  What is the main message the author is sending by mentioning the tale of Plato’s cave?
context: The Bell Curve Flattened Charles Murray is a publicity genius, and the publication of his and Richard Herrnstein's book, The Bell Curve: Intelligence and Class Structure in American Life , in the fall of 1994 was his masterpiece. These are sent out to people who might generate buzz for the book: blurbists, bookers for television talk shows, editors, and--most important--book critics. There is an ethos of letting the chips fall where they may about the sending out of galleys: Now the book will begin to receive uncontrolled reaction. The Bell Curve was not circulated in galleys before publication. The effect was, first, to increase the allure of the book (There must be something really hot in there!), and second, to ensure that no one inclined to be skeptical would be able to weigh in at the moment of publication. The people who had galley proofs were handpicked by Murray and his publisher. Another handpicked group was flown to Washington at the expense of the American Enterprise Institute and given a weekend-long personal briefing on the book's contents by Murray himself (Herrnstein had died very recently), just before publication. It is gotten up as a work of original scholarly research. Most works containing fresh regression analysis and historical argument from primary sources would be published in academic quarterlies that send manuscripts out for elaborate, lengthy evaluation before deciding whether to publish them. Herrnstein and Murray didn't do this, so it wasn't until a full year or more after The Bell Curve was published that the leading experts on its subject had a chance to go through the underlying data with care. The debate on publication day was conducted in the mass media by people with no independent ability to assess the book. During the second half of the 20 th century, this quality has risen to supreme importance, because society has become increasingly complex. About the best that can be done for these people is an effort to create a world of simple, decent, honorable toil for them.
output:  Caution that people who think they see things clearly may just be blinded by what they want to be true.
options:  Caution that people who think they see things clearly may just be blinded by what they want to be true.  Reminder to be careful what you read.  Caution against the shadows of political correctness.  Reminder that Plato believed in education.