I conduct tours of school children through our plant in Alberta, Canada. We make prepared clay. I often ask the grade 1, 2 or 3 kids why our dinnerware is made in China when we have good clay here and we have cheap energy to fire kilns. Often one will answer along the lines: "They are smarter over there!" Is there any truth in this? Why are potters using more and more prepared glazes, understanding less and less about how glazes work and becoming more and more dependent on suppliers?