"My approach tends to be from experiments. I need the challenge. If I know how to do something well, there's no need to do it all the time because it becomes a little monotonous. So I like to find a challenge."
"I collaborated with a museum in Utah. It turned out that it was in a coal-mining town. The coal miners would find naturally formed casts of dinosaur tracks in the roofs of the coal mines. Even the paleontological preparator (who made molds for me so I could make the casts in New York) used to work in a coal mine."