By Walter E. Williams, The Daily Signal - Philip Carl Salzman… explains that cancer in a Minding the Campus article, titled “What Your Sons and Daughters Will Learn at University.”… Salzman argues that for most of the 20th century, universities were dedicated to the advancement of knowledge. There was open exchange and competition in the marketplace of ideas. Different opinions were argued and respected…. Most notably in the social sciences, social work, the humanities, education and law, this is no longer the case. Leftist political ideology has emerged.