The medieval Japanese, who sometimes closed up the fronts of their helmets with ferocious metal masks painted with vivid war paint, knew the right psychology for hand-to-hand encounters. It is much more disconcerting to be confronted with an immobile, wholly artificial hobgoblin face than to see that your enemys countenance is like your own, no matter how much distorted by rage or bloodthirstiness.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.