The Deltan defense force fell silent, and I discovered that slack-jawed amazement was probably a universal expression. A dozen Deltans stared at the dead gorilloid for several beats, then a dozen Deltan heads turned as one to stare at the spear chucker. Oh, please shrug. Oh please, let a shrug be in their repertoire. No such luck. I catalogued the ear movement as a probable shrug-analogue, swallowed my disappointment, and watched as the Deltans moved as a group toward the downed gorilloid.