It's not skills at the exclusion of degrees. Blue Collar What is unskilled labor? : WhitePeopleTwitter Blue Collar Roots, Ivory Tower Dreams | by Laura Rosell - Medium Yellow (Ancient Egyptian name " khenet") was the color of women's skin, as well as the skin of people who lived near the Mediterranean - Libyans, Bedouin, Syrians and Hittites. ‘the ivory tower of academia’. Meaning Reread your comment and note that your examples are entirely about the person said to be in an ivory tower, and not how that person relates to others who don't understand those technical details. Blue Collar Intellectuals: When the Enlightened and