Those flashes of discovery are what the researchers are seeking to record now. At the Long Valley caldera, Tarduno quizzes students about the lava flows they have seen and the curve of surrounding landmasses until they realize they are standing in a dormant supervolcano roughly 20 miles long, 11 miles wide and covered in snow. “I was really excited at that instant,” student Shannon Moss recalls. “I saw this circle we were in, and it just came to me.” An otherwise fleeting moment now captured by the eye trackers.

This article was originally published with the title Expert Education.

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