But as education has expanded, more and more people have acquired different specialties which enable them to make a living. Many blue-collar workers have turned to more technology-intensive industry.
的確，由於國民教育水準不斷提高，擁有一技之長的人愈來愈多，使得願意從事這種勞力多於技術的人工作人口逐年降低，亦使工廠普遍面臨勞工短缺的問題。