Then it struck me. The professor of Native American Studies in the Sioux Nation—the one who had answered my query about the cross on the simsense chip cover. He’d been helpful—garrulous even—spouting off all kinds of supplemental information about the "tree of life." Obviously passionate about his field of study, he’d answered my posting within minutes. What was his name and Matrix LTG address again? I called it up from my headware memory: Silas Iron-feather at the Chief Joséph University at NA/SIO-SW/TEM.