We learnt that even the painting and inspection work, which skilled workers seem to do casually, is being carried out with a firm focus and precise gaze patterns. I was able to understand and explain the tips and tricks that the experts themselves had not been able to verbalize. In the past, the educator did not know how to teach it, but when I showed him the line of sight and videos of eye tracking, even non-experts were able to understand it immediately.Mr. Katsuhiro Inao, section chief in the iron pipe manufacturing section