 How does The Watcher communicate with others?
While she waited he spun a dream, attaching it to the crags that loomed over the pass, and to the frozen ground underfoot. Var saw with some surprise that all the walls were sheathed in ice—warm to the touch, bound fast against melting by the Watcher's will. The Watcher was broodingly silent; his eyes shifted to Neena, where she nestled by Var's side. That is the second part of the law the First Watcher made: to guard lest the unwary and the ignorant should bring harm on themselves and on all men." I did not see the sleepers, nor will any man until they come again, but I met their sentries, the sentinel machines that guard them now as they have for two thousand years.
 Primarily with his mind
 Mostly through transference of heat and light  A mix of many methods of communication  Primarily with his mind  By talking as the rest of the people do