John Porter (left) and Luke Lindoe sampling at a hill near Ravenscrag, Saskatchewan in the 1970s. I began working for John at Plainsman Clays in 1972. He was the manager. And an incredible potter. I was spell-bound watching him work on the potter's wheel. He got me started along that fascinating road. He was educated in England at the Central School of Design, he was a classic British potter. Best of all, he knew how to do glaze chemistry calculations. By hand. I could not believe how cool that was, to be able to predict the fired properties of glazes by knowing about their chemistry. And the chemistry of the materials we used. That led to Insight software.